72759913 has 4 divisors (see below), whose sum is σ = 74452048. Its totient is φ = 71067780.

The previous prime is 72759899. The next prime is 72759919. The reversal of 72759913 is 31995727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72759913 - 2¹⁷ = 72628841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 1692091 = 72759913 / (7 + 2 + 7 + 5 + 9 + 9 + 1 + 3).

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 72759913.

It is not an unprimeable number, because it can be changed into a prime (72759919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846003 + ... + 846088.

It is an arithmetic number, because the mean of its divisors is an integer number (18613012).

Almost surely, 2^72759913 is an apocalyptic number.

It is an amenable number.

72759913 is a deficient number, since it is larger than the sum of its proper divisors (1692135).

72759913 is a wasteful number, since it uses less digits than its factorization.

72759913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692134.

The product of its digits is 119070, while the sum is 43.

The square root of 72759913 is about 8529.9421451731. The cubic root of 72759913 is about 417.4752406224.

The spelling of 72759913 in words is "seventy-two million, seven hundred fifty-nine thousand, nine hundred thirteen".