662947751656 has 32 divisors (see below), whose sum is σ = 1316192898240. Its totient is φ = 311964360448.

The previous prime is 662947751623. The next prime is 662947751659. The reversal of 662947751656 is 656157749266.

It is not an unprimeable number, because it can be changed into a prime (662947751659) 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, 4765275 + ... + 4902421.

It is an arithmetic number, because the mean of its divisors is an integer number (41131028070).

Almost surely, 2^662947751656 is an apocalyptic number.

It is an amenable number.

662947751656 is a deficient number, since it is larger than the sum of its proper divisors (653245146584).

662947751656 is a wasteful number, since it uses less digits than its factorization.

662947751656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172713 (or 172709 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 64.

The spelling of 662947751656 in words is "six hundred sixty-two billion, nine hundred forty-seven million, seven hundred fifty-one thousand, six hundred fifty-six".