72736689 has 16 divisors (see below), whose sum is σ = 98864000. Its totient is φ = 47558016.

The previous prime is 72736637. The next prime is 72736691. The reversal of 72736689 is 98663727.

It is not a de Polignac number, because 72736689 - 2¹² = 72732593 is a prime.

It is a super-3 number, since 3×72736689³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

Its product of digits (762048) is a multiple of the sum of its prime divisors (1944).

It is not an unprimeable number, because it can be changed into a prime (72736789) 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, 42747 + ... + 44415.

It is an arithmetic number, because the mean of its divisors is an integer number (6179000).

Almost surely, 2^72736689 is an apocalyptic number.

It is an amenable number.

72736689 is a deficient number, since it is larger than the sum of its proper divisors (26127311).

72736689 is a wasteful number, since it uses less digits than its factorization.

72736689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944.

The product of its digits is 762048, while the sum is 48.

The square root of 72736689 is about 8528.5807142807. The cubic root of 72736689 is about 417.4308183743.

The spelling of 72736689 in words is "seventy-two million, seven hundred thirty-six thousand, six hundred eighty-nine".