613688616 has 32 divisors (see below), whose sum is σ = 1704691200. Its totient is φ = 204562800.

The previous prime is 613688587. The next prime is 613688629. The reversal of 613688616 is 616886316.

It is a super-2 number, since 2×613688616² = 753227434815990912, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1420360 + ... + 1420791.

It is an arithmetic number, because the mean of its divisors is an integer number (53271600).

Almost surely, 2^613688616 is an apocalyptic number.

It is an amenable number.

613688616 is an abundant number, since it is smaller than the sum of its proper divisors (1091002584).

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

613688616 is a wasteful number, since it uses less digits than its factorization.

613688616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841166 (or 2841156 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 613688616 is about 24772.7393721405. The cubic root of 613688616 is about 849.7986217289.

The spelling of 613688616 in words is "six hundred thirteen million, six hundred eighty-eight thousand, six hundred sixteen".