72776633 has 16 divisors (see below), whose sum is σ = 76432896. Its totient is φ = 69242880.

The previous prime is 72776611. The next prime is 72776651. The reversal of 72776633 is 33667727.

It is a cyclic number.

It is not a de Polignac number, because 72776633 - 2⁸ = 72776377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72776603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376985 + ... + 377177.

It is an arithmetic number, because the mean of its divisors is an integer number (4777056).

Almost surely, 2^72776633 is an apocalyptic number.

It is an amenable number.

72776633 is a deficient number, since it is larger than the sum of its proper divisors (3656263).

72776633 is a wasteful number, since it uses less digits than its factorization.

72776633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its digits is 222264, while the sum is 41.

The square root of 72776633 is about 8530.9221658623. The cubic root of 72776633 is about 417.5072163405.

The spelling of 72776633 in words is "seventy-two million, seven hundred seventy-six thousand, six hundred thirty-three".