617716816 has 10 divisors (see below), whose sum is σ = 1196826362. Its totient is φ = 308858400.

The previous prime is 617716807. The next prime is 617716831. The reversal of 617716816 is 618617716.

It can be written as a sum of positive squares in only one way, i.e., 501939216 + 115777600 = 22404^2 + 10760^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19303635 + ... + 19303666.

Almost surely, 2^617716816 is an apocalyptic number.

It is an amenable number.

617716816 is a deficient number, since it is larger than the sum of its proper divisors (579109546).

617716816 is a wasteful number, since it uses less digits than its factorization.

617716816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38607309 (or 38607303 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The square root of 617716816 is about 24853.9094711476. The cubic root of 617716816 is about 851.6539036737.

The spelling of 617716816 in words is "six hundred seventeen million, seven hundred sixteen thousand, eight hundred sixteen".