617216664 has 16 divisors (see below), whose sum is σ = 1543041720. Its totient is φ = 205738880.

The previous prime is 617216629. The next prime is 617216681. The reversal of 617216664 is 466612716.

617216664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12858657 + ... + 12858704.

Almost surely, 2^617216664 is an apocalyptic number.

It is an amenable number.

617216664 is an abundant number, since it is smaller than the sum of its proper divisors (925825056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

617216664 is a wasteful number, since it uses less digits than its factorization.

617216664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25717370 (or 25717366 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 617216664 is about 24843.8455960425. The cubic root of 617216664 is about 851.4239863359.

The spelling of 617216664 in words is "six hundred seventeen million, two hundred sixteen thousand, six hundred sixty-four".