72513065 has 16 divisors (see below), whose sum is σ = 88862400. Its totient is φ = 56788032.

The previous prime is 72513053. The next prime is 72513083. The reversal of 72513065 is 56031527.

It is a cyclic number.

It is not a de Polignac number, because 72513065 - 2¹⁴ = 72496681 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109706 + ... + 110364.

It is an arithmetic number, because the mean of its divisors is an integer number (5553900).

Almost surely, 2^72513065 is an apocalyptic number.

It is an amenable number.

72513065 is a deficient number, since it is larger than the sum of its proper divisors (16349335).

72513065 is a wasteful number, since it uses less digits than its factorization.

72513065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 72513065 is about 8515.4603516193. The cubic root of 72513065 is about 417.0025916755.

The spelling of 72513065 in words is "seventy-two million, five hundred thirteen thousand, sixty-five".