613812864 has 64 divisors (see below), whose sum is σ = 1863368640. Its totient is φ = 175374336.

The previous prime is 613812827. The next prime is 613812877. The reversal of 613812864 is 468218316.

It is a tau number, because it is divible by the number of its divisors (64).

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, 111489 + ... + 116864.

It is an arithmetic number, because the mean of its divisors is an integer number (29115135).

Almost surely, 2^613812864 is an apocalyptic number.

613812864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

613812864 is an abundant number, since it is smaller than the sum of its proper divisors (1249555776).

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

613812864 is a wasteful number, since it uses less digits than its factorization.

613812864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228377 (or 228365 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 613812864 is about 24775.2470017960. The cubic root of 613812864 is about 849.8559682135.

The spelling of 613812864 in words is "six hundred thirteen million, eight hundred twelve thousand, eight hundred sixty-four".