72516747 has 12 divisors (see below), whose sum is σ = 102712376. Its totient is φ = 45500160.

The previous prime is 72516709. The next prime is 72516767. The reversal of 72516747 is 74761527.

It is not a de Polignac number, because 72516747 - 2¹² = 72512651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72516767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40954 + ... + 42687.

Almost surely, 2^72516747 is an apocalyptic number.

72516747 is a deficient number, since it is larger than the sum of its proper divisors (30195629).

72516747 is a wasteful number, since it uses less digits than its factorization.

72516747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83678 (or 83661 counting only the distinct ones).

The product of its digits is 82320, while the sum is 39.

The square root of 72516747 is about 8515.6765438807. The cubic root of 72516747 is about 417.0096496108.

The spelling of 72516747 in words is "seventy-two million, five hundred sixteen thousand, seven hundred forty-seven".