72636751 has 16 divisors (see below), whose sum is σ = 82188288. Its totient is φ = 63597600.

The previous prime is 72636743. The next prime is 72636757. The reversal of 72636751 is 15763627.

It is not a de Polignac number, because 72636751 - 2³ = 72636743 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 72636751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72636757) 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 15 ways as a sum of consecutive naturals, for example, 99550 + ... + 100276.

It is an arithmetic number, because the mean of its divisors is an integer number (5136768).

Almost surely, 2^72636751 is an apocalyptic number.

72636751 is a deficient number, since it is larger than the sum of its proper divisors (9551537).

72636751 is a wasteful number, since it uses less digits than its factorization.

72636751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062.

The product of its digits is 52920, while the sum is 37.

The square root of 72636751 is about 8522.7196950269. The cubic root of 72636751 is about 417.2395516635.

The spelling of 72636751 in words is "seventy-two million, six hundred thirty-six thousand, seven hundred fifty-one".