72732569 has 8 divisors (see below), whose sum is σ = 89517120. Its totient is φ = 57546576.

The previous prime is 72732559. The next prime is 72732571. The reversal of 72732569 is 96523727.

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

It is a cyclic number.

It is not a de Polignac number, because 72732569 - 2⁴ = 72732553 is a prime.

It is a super-2 number, since 2×72732569² = 10580053186679522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72732559) 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, 399539 + ... + 399720.

It is an arithmetic number, because the mean of its divisors is an integer number (11189640).

Almost surely, 2^72732569 is an apocalyptic number.

It is an amenable number.

72732569 is a deficient number, since it is larger than the sum of its proper divisors (16784551).

72732569 is a wasteful number, since it uses less digits than its factorization.

72732569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799279.

The product of its digits is 158760, while the sum is 41.

The square root of 72732569 is about 8528.3391700846. The cubic root of 72732569 is about 417.4229367606.

The spelling of 72732569 in words is "seventy-two million, seven hundred thirty-two thousand, five hundred sixty-nine".