72079775 has 6 divisors (see below), whose sum is σ = 89378952. Its totient is φ = 57663800.

The previous prime is 72079759. The next prime is 72079781. The reversal of 72079775 is 57797027.

It is not a de Polignac number, because 72079775 - 2⁴ = 72079759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1441571 + ... + 1441620.

It is an arithmetic number, because the mean of its divisors is an integer number (14896492).

Almost surely, 2^72079775 is an apocalyptic number.

72079775 is a deficient number, since it is larger than the sum of its proper divisors (17299177).

72079775 is a wasteful number, since it uses less digits than its factorization.

72079775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883201 (or 2883196 counting only the distinct ones).

The product of its (nonzero) digits is 216090, while the sum is 44.

The square root of 72079775 is about 8489.9808598135. The cubic root of 72079775 is about 416.1703548315.

The spelling of 72079775 in words is "seventy-two million, seventy-nine thousand, seven hundred seventy-five".