56667985 has 16 divisors (see below), whose sum is σ = 74338560. Its totient is φ = 41127040.

The previous prime is 56667983. The next prime is 56668037. The reversal of 56667985 is 58976665.

56667985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56667985 - 2¹ = 56667983 is a prime.

It is a super-2 number, since 2×56667985² = 6422521047920450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56667983) 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 15 ways as a sum of consecutive naturals, for example, 38829 + ... + 40261.

It is an arithmetic number, because the mean of its divisors is an integer number (4646160).

Almost surely, 2^56667985 is an apocalyptic number.

56667985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56667985 is a deficient number, since it is larger than the sum of its proper divisors (17670575).

56667985 is a wasteful number, since it uses less digits than its factorization.

56667985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168.

The product of its digits is 2721600, while the sum is 52.

The square root of 56667985 is about 7527.8140917533. The cubic root of 56667985 is about 384.1014294598.

The spelling of 56667985 in words is "fifty-six million, six hundred sixty-seven thousand, nine hundred eighty-five".