72634917 has 16 divisors (see below), whose sum is σ = 99159552. Its totient is φ = 47280240.

The previous prime is 72634873. The next prime is 72634949. The reversal of 72634917 is 71943627.

It is not a de Polignac number, because 72634917 - 2¹¹ = 72632869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72634987) 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, 21198 + ... + 24384.

It is an arithmetic number, because the mean of its divisors is an integer number (6197472).

Almost surely, 2^72634917 is an apocalyptic number.

It is an amenable number.

72634917 is a deficient number, since it is larger than the sum of its proper divisors (26524635).

72634917 is a wasteful number, since it uses less digits than its factorization.

72634917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368.

The product of its digits is 63504, while the sum is 39.

The square root of 72634917 is about 8522.6120995854. The cubic root of 72634917 is about 417.2360400169.

The spelling of 72634917 in words is "seventy-two million, six hundred thirty-four thousand, nine hundred seventeen".