72761413 has 4 divisors (see below), whose sum is σ = 72981568. Its totient is φ = 72541260.

The previous prime is 72761401. The next prime is 72761417. The reversal of 72761413 is 31416727.

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 72761413 - 2²¹ = 70664261 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 (72761417) 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, 109581 + ... + 110242.

It is an arithmetic number, because the mean of its divisors is an integer number (18245392).

Almost surely, 2^72761413 is an apocalyptic number.

It is an amenable number.

72761413 is a deficient number, since it is larger than the sum of its proper divisors (220155).

72761413 is a wasteful number, since it uses less digits than its factorization.

72761413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220154.

The product of its digits is 7056, while the sum is 31.

The square root of 72761413 is about 8530.0300702870. The cubic root of 72761413 is about 417.4781094574.

The spelling of 72761413 in words is "seventy-two million, seven hundred sixty-one thousand, four hundred thirteen".