56899865 has 16 divisors (see below), whose sum is σ = 75231936. Its totient is φ = 40968000.

The previous prime is 56899837. The next prime is 56899891.

56899865 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56899865 - 2¹⁶ = 56834329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56899865.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (4701996).

Almost surely, 2^56899865 is an apocalyptic number.

56899865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56899865 is a deficient number, since it is larger than the sum of its proper divisors (18332071).

56899865 is a wasteful number, since it uses less digits than its factorization.

56899865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10360.

The product of its digits is 4665600, while the sum is 56.

The square root of 56899865 is about 7543.1999178068. The cubic root of 56899865 is about 384.6246186552.

The spelling of 56899865 in words is "fifty-six million, eight hundred ninety-nine thousand, eight hundred sixty-five".