617712616 has 8 divisors (see below), whose sum is σ = 1158211170. Its totient is φ = 308856304.

The previous prime is 617712577. The next prime is 617712619. The reversal of 617712616 is 616217716.

It can be written as a sum of positive squares in only one way, i.e., 577440900 + 40271716 = 24030^2 + 6346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (617712619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38607031 + ... + 38607046.

Almost surely, 2^617712616 is an apocalyptic number.

It is an amenable number.

617712616 is a deficient number, since it is larger than the sum of its proper divisors (540498554).

617712616 is a wasteful number, since it uses less digits than its factorization.

617712616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77214083 (or 77214079 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 617712616 is about 24853.8249772545. The cubic root of 617712616 is about 851.6519734718.

The spelling of 617712616 in words is "six hundred seventeen million, seven hundred twelve thousand, six hundred sixteen".