56402665 has 8 divisors (see below), whose sum is σ = 73836288. Its totient is φ = 41020080.

The previous prime is 56402663. The next prime is 56402681. The reversal of 56402665 is 56620465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56402665 - 2¹ = 56402663 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 56402665.

It is not an unprimeable number, because it can be changed into a prime (56402663) 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, 512697 + ... + 512806.

It is an arithmetic number, because the mean of its divisors is an integer number (9229536).

Almost surely, 2^56402665 is an apocalyptic number.

56402665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56402665 is a deficient number, since it is larger than the sum of its proper divisors (17433623).

56402665 is a wasteful number, since it uses less digits than its factorization.

56402665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025519.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 56402665 is about 7510.1707703620. The cubic root of 56402665 is about 383.5010360526.

The spelling of 56402665 in words is "fifty-six million, four hundred two thousand, six hundred sixty-five".