72755787 has 8 divisors (see below), whose sum is σ = 104469904. Its totient is φ = 44772768.

The previous prime is 72755777. The next prime is 72755833. The reversal of 72755787 is 78755727.

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

It is not a de Polignac number, because 72755787 - 2⁷ = 72755659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72755707) 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, 932728 + ... + 932805.

It is an arithmetic number, because the mean of its divisors is an integer number (13058738).

Almost surely, 2^72755787 is an apocalyptic number.

72755787 is a deficient number, since it is larger than the sum of its proper divisors (31714117).

72755787 is a wasteful number, since it uses less digits than its factorization.

72755787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865549.

The product of its digits is 960400, while the sum is 48.

The square root of 72755787 is about 8529.7002878179. The cubic root of 72755787 is about 417.4673492101.

The spelling of 72755787 in words is "seventy-two million, seven hundred fifty-five thousand, seven hundred eighty-seven".