617608693 has 4 divisors (see below), whose sum is σ = 665117068. Its totient is φ = 570100320.

The previous prime is 617608681. The next prime is 617608711. The reversal of 617608693 is 396806716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 326633329 + 290975364 = 18073^2 + 17058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617608693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617608643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23754168 + ... + 23754193.

It is an arithmetic number, because the mean of its divisors is an integer number (166279267).

Almost surely, 2^617608693 is an apocalyptic number.

It is an amenable number.

617608693 is a deficient number, since it is larger than the sum of its proper divisors (47508375).

617608693 is a wasteful number, since it uses less digits than its factorization.

617608693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47508374.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 617608693 is about 24851.7342050811. The cubic root of 617608693 is about 851.6042105965.

The spelling of 617608693 in words is "six hundred seventeen million, six hundred eight thousand, six hundred ninety-three".