6656662601 has 8 divisors (see below), whose sum is σ = 6860478240. Its totient is φ = 6455074752.

The previous prime is 6656662589. The next prime is 6656662619. The reversal of 6656662601 is 1062666566.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6656662601 is a prime.

It is a super-2 number, since 2×6656662601² = 88622313967104170402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6656662501) 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, 550880 + ... + 562833.

It is an arithmetic number, because the mean of its divisors is an integer number (857559780).

Almost surely, 2^6656662601 is an apocalyptic number.

It is an amenable number.

6656662601 is a deficient number, since it is larger than the sum of its proper divisors (203815639).

6656662601 is a wasteful number, since it uses less digits than its factorization.

6656662601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113895.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 6656662601 is about 81588.3729522779. The cubic root of 6656662601 is about 1881.1301678456.

The spelling of 6656662601 in words is "six billion, six hundred fifty-six million, six hundred sixty-two thousand, six hundred one".