656650612 has 6 divisors (see below), whose sum is σ = 1149138578. Its totient is φ = 328325304.

The previous prime is 656650609. The next prime is 656650613. The reversal of 656650612 is 216056656.

656650612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 510579216 + 146071396 = 22596^2 + 12086^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656650613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82081323 + ... + 82081330.

Almost surely, 2^656650612 is an apocalyptic number.

It is an amenable number.

656650612 is a deficient number, since it is larger than the sum of its proper divisors (492487966).

656650612 is a wasteful number, since it uses less digits than its factorization.

656650612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164162657 (or 164162655 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 656650612 is about 25625.1948675517. The cubic root of 656650612 is about 869.1834554719.

The spelling of 656650612 in words is "six hundred fifty-six million, six hundred fifty thousand, six hundred twelve".