72520607 has 4 divisors (see below), whose sum is σ = 73542096. Its totient is φ = 71499120.

The previous prime is 72520573. The next prime is 72520627. The reversal of 72520607 is 70602527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70602527 = 59 ⋅1196653.

It is a cyclic number.

It is not a de Polignac number, because 72520607 - 2⁶ = 72520543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72520607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72520627) 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, 510638 + ... + 510779.

It is an arithmetic number, because the mean of its divisors is an integer number (18385524).

Almost surely, 2^72520607 is an apocalyptic number.

72520607 is a deficient number, since it is larger than the sum of its proper divisors (1021489).

72520607 is a wasteful number, since it uses less digits than its factorization.

72520607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021488.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72520607 is about 8515.9031816948. The cubic root of 72520607 is about 417.0170484934.

The spelling of 72520607 in words is "seventy-two million, five hundred twenty thousand, six hundred seven".