56667798 has 96 divisors (see below), whose sum is σ = 141523200. Its totient is φ = 16228800.

The previous prime is 56667797. The next prime is 56667799. The reversal of 56667798 is 89776665.

It is a happy number.

56667798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56667797) and next prime (56667799).

It is a super-2 number, since 2×56667798² = 6422478660337608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56667797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 407613 + ... + 407751.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^56667798 is an apocalyptic number.

56667798 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56667798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70761600).

56667798 is an abundant number, since it is smaller than the sum of its proper divisors (84855402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56667798 is a wasteful number, since it uses less digits than its factorization.

56667798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 255 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 56667798 is about 7527.8016711388. The cubic root of 56667798 is about 384.1010069576.

The spelling of 56667798 in words is "fifty-six million, six hundred sixty-seven thousand, seven hundred ninety-eight".