72869645 has 8 divisors (see below), whose sum is σ = 87492960. Its totient is φ = 58262800.

The previous prime is 72869611. The next prime is 72869683. The reversal of 72869645 is 54696827.

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

It is not a de Polignac number, because 72869645 - 2²⁰ = 71821069 is a prime.

It is a super-3 number, since 3×72869645³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72869645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10070 + ... + 15720.

It is an arithmetic number, because the mean of its divisors is an integer number (10936620).

Almost surely, 2^72869645 is an apocalyptic number.

It is an amenable number.

72869645 is a deficient number, since it is larger than the sum of its proper divisors (14623315).

72869645 is a wasteful number, since it uses less digits than its factorization.

72869645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8235.

The product of its digits is 725760, while the sum is 47.

The square root of 72869645 is about 8536.3718874004. The cubic root of 72869645 is about 417.6850053175.

The spelling of 72869645 in words is "seventy-two million, eight hundred sixty-nine thousand, six hundred forty-five".