72718077 has 4 divisors (see below), whose sum is σ = 96957440. Its totient is φ = 48478716.

The previous prime is 72718069. The next prime is 72718097. The reversal of 72718077 is 77081727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72718077 - 2³ = 72718069 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 (72718057) 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, 12119677 + ... + 12119682.

It is an arithmetic number, because the mean of its divisors is an integer number (24239360).

Almost surely, 2^72718077 is an apocalyptic number.

It is an amenable number.

72718077 is a deficient number, since it is larger than the sum of its proper divisors (24239363).

72718077 is a wasteful number, since it uses less digits than its factorization.

72718077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24239362.

The product of its (nonzero) digits is 38416, while the sum is 39.

The square root of 72718077 is about 8527.4894898792. The cubic root of 72718077 is about 417.3952110109.

The spelling of 72718077 in words is "seventy-two million, seven hundred eighteen thousand, seventy-seven".