72654633 has 6 divisors (see below), whose sum is σ = 104945594. Its totient is φ = 48436416.

The previous prime is 72654619. The next prime is 72654661. The reversal of 72654633 is 33645627.

It can be written as a sum of positive squares in only one way, i.e., 53758224 + 18896409 = 7332^2 + 4347^2 .

It is not a de Polignac number, because 72654633 - 2⁸ = 72654377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72654833) 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 5 ways as a sum of consecutive naturals, for example, 4036360 + ... + 4036377.

Almost surely, 2^72654633 is an apocalyptic number.

It is an amenable number.

72654633 is a deficient number, since it is larger than the sum of its proper divisors (32290961).

72654633 is a wasteful number, since it uses less digits than its factorization.

72654633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8072743 (or 8072740 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 72654633 is about 8523.7687087344. The cubic root of 72654633 is about 417.2737880767.

The spelling of 72654633 in words is "seventy-two million, six hundred fifty-four thousand, six hundred thirty-three".