72770361 has 16 divisors (see below), whose sum is σ = 105431040. Its totient is φ = 44476560.

The previous prime is 72770351. The next prime is 72770363. The reversal of 72770361 is 16307727.

It is not a de Polignac number, because 72770361 - 2⁵ = 72770329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72770363) 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, 18825 + ... + 22358.

It is an arithmetic number, because the mean of its divisors is an integer number (6589440).

Almost surely, 2^72770361 is an apocalyptic number.

It is an amenable number.

72770361 is a deficient number, since it is larger than the sum of its proper divisors (32660679).

72770361 is a wasteful number, since it uses less digits than its factorization.

72770361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41236.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 72770361 is about 8530.5545540721. The cubic root of 72770361 is about 417.4952221954.

The spelling of 72770361 in words is "seventy-two million, seven hundred seventy thousand, three hundred sixty-one".