72465651 has 16 divisors (see below), whose sum is σ = 107904000. Its totient is φ = 48064104.

The previous prime is 72465649. The next prime is 72465667. The reversal of 72465651 is 15656427.

It is a happy number.

It is not a de Polignac number, because 72465651 - 2¹ = 72465649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72465551) 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, 1371 + ... + 12116.

It is an arithmetic number, because the mean of its divisors is an integer number (6744000).

Almost surely, 2^72465651 is an apocalyptic number.

72465651 is a deficient number, since it is larger than the sum of its proper divisors (35438349).

72465651 is a wasteful number, since it uses less digits than its factorization.

72465651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13695 (or 13689 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 72465651 is about 8512.6759012663. The cubic root of 72465651 is about 416.9116835896.

The spelling of 72465651 in words is "seventy-two million, four hundred sixty-five thousand, six hundred fifty-one".