56671736 has 32 divisors (see below), whose sum is σ = 117331200. Its totient is φ = 25446240.

The previous prime is 56671709. The next prime is 56671739. The reversal of 56671736 is 63717665.

It is a super-2 number, since 2×56671736² = 6423371322507392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56671693 and 56671702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56671739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425 + ... + 11183.

It is an arithmetic number, because the mean of its divisors is an integer number (3666600).

Almost surely, 2^56671736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56671736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58665600).

56671736 is an abundant number, since it is smaller than the sum of its proper divisors (60659464).

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

56671736 is a wasteful number, since it uses less digits than its factorization.

56671736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859 (or 7855 counting only the distinct ones).

The product of its digits is 158760, while the sum is 41.

The square root of 56671736 is about 7528.0632303402. The cubic root of 56671736 is about 384.1099041607.

The spelling of 56671736 in words is "fifty-six million, six hundred seventy-one thousand, seven hundred thirty-six".