72865291 has 8 divisors (see below), whose sum is σ = 73410624. Its totient is φ = 72322560.

The previous prime is 72865271. The next prime is 72865297. The reversal of 72865291 is 19256827.

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 72865291 - 2¹⁷ = 72734219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72865297) 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, 125995 + ... + 126571.

It is an arithmetic number, because the mean of its divisors is an integer number (9176328).

Almost surely, 2^72865291 is an apocalyptic number.

72865291 is a deficient number, since it is larger than the sum of its proper divisors (545333).

72865291 is a wasteful number, since it uses less digits than its factorization.

72865291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301.

The product of its digits is 60480, while the sum is 40.

The square root of 72865291 is about 8536.1168572132. The cubic root of 72865291 is about 417.6766861849.

The spelling of 72865291 in words is "seventy-two million, eight hundred sixty-five thousand, two hundred ninety-one".