56646398 has 16 divisors (see below), whose sum is σ = 85895424. Its totient is φ = 28016640.

The previous prime is 56646389. The next prime is 56646407. The reversal of 56646398 is 89364665.

It is an interprime number because it is at equal distance from previous prime (56646389) and next prime (56646407).

It is a super-3 number, since 3×56646398³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97886 + ... + 98462.

It is an arithmetic number, because the mean of its divisors is an integer number (5368464).

Almost surely, 2^56646398 is an apocalyptic number.

56646398 is a deficient number, since it is larger than the sum of its proper divisors (29249026).

56646398 is a wasteful number, since it uses less digits than its factorization.

56646398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027.

The product of its digits is 933120, while the sum is 47.

The square root of 56646398 is about 7526.3801392170. The cubic root of 56646398 is about 384.0526502967.

It can be divided in two parts, 566 and 46398, that added together give a palindrome (46964).

The spelling of 56646398 in words is "fifty-six million, six hundred forty-six thousand, three hundred ninety-eight".