656600216 has 16 divisors (see below), whose sum is σ = 1231432200. Its totient is φ = 328218304.

The previous prime is 656600213. The next prime is 656600227. The reversal of 656600216 is 612006656.

It is a super-2 number, since 2×656600216² = 862247687302493312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656600213) 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, 36380 + ... + 51348.

Almost surely, 2^656600216 is an apocalyptic number.

It is an amenable number.

656600216 is a deficient number, since it is larger than the sum of its proper divisors (574831984).

656600216 is a wasteful number, since it uses less digits than its factorization.

656600216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20458 (or 20454 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 656600216 is about 25624.2115195766. The cubic root of 656600216 is about 869.1612191465.

The spelling of 656600216 in words is "six hundred fifty-six million, six hundred thousand, two hundred sixteen".