56666697 has 8 divisors (see below), whose sum is σ = 75612000. Its totient is φ = 37749600.

The previous prime is 56666693. The next prime is 56666707. The reversal of 56666697 is 79666665.

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

It is not a de Polignac number, because 56666697 - 2² = 56666693 is a prime.

It is a super-2 number, since 2×56666697² = 6422229097779618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56666693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1804 + ... + 10797.

It is an arithmetic number, because the mean of its divisors is an integer number (9451500).

Almost surely, 2^56666697 is an apocalyptic number.

It is an amenable number.

56666697 is a deficient number, since it is larger than the sum of its proper divisors (18945303).

56666697 is a wasteful number, since it uses less digits than its factorization.

56666697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14103.

The product of its digits is 2449440, while the sum is 51.

The square root of 56666697 is about 7527.7285418644. The cubic root of 56666697 is about 384.0985193722.

The spelling of 56666697 in words is "fifty-six million, six hundred sixty-six thousand, six hundred ninety-seven".