613672731 has 48 divisors (see below), whose sum is σ = 1032368064. Its totient is φ = 344051712.

The previous prime is 613672727. The next prime is 613672733. The reversal of 613672731 is 137276316.

613672731 is a `hidden beast` number, since 613 + 6 + 7 + 2 + 7 + 31 = 666.

It is not a de Polignac number, because 613672731 - 2² = 613672727 is a prime.

It is a super-2 number, since 2×613672731² = 753188441545996722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (613672733) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 836841 + ... + 837573.

It is an arithmetic number, because the mean of its divisors is an integer number (21507668).

Almost surely, 2^613672731 is an apocalyptic number.

613672731 is a deficient number, since it is larger than the sum of its proper divisors (418695333).

613672731 is a wasteful number, since it uses less digits than its factorization.

613672731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 977 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 613672731 is about 24772.4187555434. The cubic root of 613672731 is about 849.7912894721.

The spelling of 613672731 in words is "six hundred thirteen million, six hundred seventy-two thousand, seven hundred thirty-one".