72760639 has 6 divisors (see below), whose sum is σ = 84639984. Its totient is φ = 62366220.

The previous prime is 72760637. The next prime is 72760669. The reversal of 72760639 is 93606727.

It is not a de Polignac number, because 72760639 - 2¹ = 72760637 is a prime.

It is a super-2 number, since 2×72760639² = 10588221175376642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72760637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 742407 + ... + 742504.

It is an arithmetic number, because the mean of its divisors is an integer number (14106664).

Almost surely, 2^72760639 is an apocalyptic number.

72760639 is a deficient number, since it is larger than the sum of its proper divisors (11879345).

72760639 is a wasteful number, since it uses less digits than its factorization.

72760639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484925 (or 1484918 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 72760639 is about 8529.9847010414. The cubic root of 72760639 is about 417.4766291434.

The spelling of 72760639 in words is "seventy-two million, seven hundred sixty thousand, six hundred thirty-nine".