72516749 has 8 divisors (see below), whose sum is σ = 76524000. Its totient is φ = 68528592.

The previous prime is 72516709. The next prime is 72516767. The reversal of 72516749 is 94761527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72516749 - 2¹⁶ = 72451213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72516709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3407 + ... + 12515.

It is an arithmetic number, because the mean of its divisors is an integer number (9565500).

Almost surely, 2^72516749 is an apocalyptic number.

It is an amenable number.

72516749 is a deficient number, since it is larger than the sum of its proper divisors (4007251).

72516749 is a wasteful number, since it uses less digits than its factorization.

72516749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9547.

The product of its digits is 105840, while the sum is 41.

The square root of 72516749 is about 8515.6766613112. The cubic root of 72516749 is about 417.0096534445.

The spelling of 72516749 in words is "seventy-two million, five hundred sixteen thousand, seven hundred forty-nine".