72795559 has 4 divisors (see below), whose sum is σ = 73502416. Its totient is φ = 72088704.

The previous prime is 72795523. The next prime is 72795571. The reversal of 72795559 is 95559727.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72795559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72795059) 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, 353274 + ... + 353479.

It is an arithmetic number, because the mean of its divisors is an integer number (18375604).

Almost surely, 2^72795559 is an apocalyptic number.

72795559 is a deficient number, since it is larger than the sum of its proper divisors (706857).

72795559 is a wasteful number, since it uses less digits than its factorization.

72795559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706856.

The product of its digits is 992250, while the sum is 49.

The square root of 72795559 is about 8532.0313524975. The cubic root of 72795559 is about 417.5434049558.

The spelling of 72795559 in words is "seventy-two million, seven hundred ninety-five thousand, five hundred fifty-nine".