72769751 has 2 divisors, whose sum is σ = 72769752. Its totient is φ = 72769750.

The previous prime is 72769721. The next prime is 72769759. The reversal of 72769751 is 15796727.

It is a strong prime.

It is an emirp because it is prime and its reverse (15796727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72769751 - 2⁶ = 72769687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72769759) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36384875 + 36384876.

It is an arithmetic number, because the mean of its divisors is an integer number (36384876).

Almost surely, 2^72769751 is an apocalyptic number.

72769751 is a deficient number, since it is larger than the sum of its proper divisors (1).

72769751 is an equidigital number, since it uses as much as digits as its factorization.

72769751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220, while the sum is 44.

The square root of 72769751 is about 8530.5188001668. The cubic root of 72769751 is about 417.4940556363.

The spelling of 72769751 in words is "seventy-two million, seven hundred sixty-nine thousand, seven hundred fifty-one".