72076765 has 8 divisors (see below), whose sum is σ = 86545368. Its totient is φ = 57625920.

The previous prime is 72076757. The next prime is 72076783. The reversal of 72076765 is 56767027.

It can be written as a sum of positive squares in 4 ways, for example, as 48525156 + 23551609 = 6966^2 + 4853^2 .

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

It is not a de Polignac number, because 72076765 - 2³ = 72076757 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7339 + ... + 14071.

It is an arithmetic number, because the mean of its divisors is an integer number (10818171).

Almost surely, 2^72076765 is an apocalyptic number.

It is an amenable number.

72076765 is a deficient number, since it is larger than the sum of its proper divisors (14468603).

72076765 is a wasteful number, since it uses less digits than its factorization.

72076765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8879.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 72076765 is about 8489.8035901898. The cubic root of 72076765 is about 416.1645617584.

The spelling of 72076765 in words is "seventy-two million, seventy-six thousand, seven hundred sixty-five".