617655616 has 28 divisors (see below), whose sum is σ = 1278952992. Its totient is φ = 295399808.

The previous prime is 617655613. The next prime is 617655617. The reversal of 617655616 is 616556716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617655613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208330 + ... + 211273.

Almost surely, 2^617655616 is an apocalyptic number.

It is an amenable number.

617655616 is an abundant number, since it is smaller than the sum of its proper divisors (661297376).

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

617655616 is a wasteful number, since it uses less digits than its factorization.

617655616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419638 (or 419628 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The square root of 617655616 is about 24852.6782460161. The cubic root of 617655616 is about 851.6257770095.

The spelling of 617655616 in words is "six hundred seventeen million, six hundred fifty-five thousand, six hundred sixteen".