72690583 has 4 divisors (see below), whose sum is σ = 83074960. Its totient is φ = 62306208.

The previous prime is 72690547. The next prime is 72690587. The reversal of 72690583 is 38509627.

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

It is a cyclic number.

It is not a de Polignac number, because 72690583 - 2²⁵ = 39136151 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 (72690587) 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, 5192178 + ... + 5192191.

It is an arithmetic number, because the mean of its divisors is an integer number (20768740).

Almost surely, 2^72690583 is an apocalyptic number.

72690583 is a deficient number, since it is larger than the sum of its proper divisors (10384377).

72690583 is a wasteful number, since it uses less digits than its factorization.

72690583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384376.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 72690583 is about 8525.8772569161. The cubic root of 72690583 is about 417.3426000187.

The spelling of 72690583 in words is "seventy-two million, six hundred ninety thousand, five hundred eighty-three".