56666363 has 4 divisors (see below), whose sum is σ = 61025328. Its totient is φ = 52307400.

The previous prime is 56666359. The next prime is 56666369. The reversal of 56666363 is 36366665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56666363 - 2² = 56666359 is a prime.

It is a super-2 number, since 2×56666363² = 6422153391295538, 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 56666363.

It is not an unprimeable number, because it can be changed into a prime (56666369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2179463 + ... + 2179488.

It is an arithmetic number, because the mean of its divisors is an integer number (15256332).

Almost surely, 2^56666363 is an apocalyptic number.

56666363 is a deficient number, since it is larger than the sum of its proper divisors (4358965).

56666363 is a wasteful number, since it uses less digits than its factorization.

56666363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358964.

The product of its digits is 349920, while the sum is 41.

The square root of 56666363 is about 7527.7063571848. The cubic root of 56666363 is about 384.0977647305.

The spelling of 56666363 in words is "fifty-six million, six hundred sixty-six thousand, three hundred sixty-three".