56699040 has 96 divisors (see below), whose sum is σ = 188032320. Its totient is φ = 14321664.

The previous prime is 56699039. The next prime is 56699047. The reversal of 56699040 is 4099665.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×56699040² = 6429562273843200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56699040.

It is not an unprimeable number, because it can be changed into a prime (56699047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6012 + ... + 12228.

It is an arithmetic number, because the mean of its divisors is an integer number (1958670).

Almost surely, 2^56699040 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 56699040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94016160).

56699040 is an abundant number, since it is smaller than the sum of its proper divisors (131333280).

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

56699040 is a wasteful number, since it uses less digits than its factorization.

56699040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254 (or 6246 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 56699040 is about 7529.8764930110. The cubic root of 56699040 is about 384.1715813076.

The spelling of 56699040 in words is "fifty-six million, six hundred ninety-nine thousand, forty".