72895691 has 4 divisors (see below), whose sum is σ = 79522584. Its totient is φ = 66268800.

The previous prime is 72895687. The next prime is 72895709. The reversal of 72895691 is 19659827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72895691 - 2² = 72895687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72895091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3313430 + ... + 3313451.

It is an arithmetic number, because the mean of its divisors is an integer number (19880646).

Almost surely, 2^72895691 is an apocalyptic number.

72895691 is a deficient number, since it is larger than the sum of its proper divisors (6626893).

72895691 is a wasteful number, since it uses less digits than its factorization.

72895691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626892.

The product of its digits is 272160, while the sum is 47.

The square root of 72895691 is about 8537.8973406805. The cubic root of 72895691 is about 417.7347641608.

The spelling of 72895691 in words is "seventy-two million, eight hundred ninety-five thousand, six hundred ninety-one".