72217079 has 16 divisors (see below), whose sum is σ = 82529280. Its totient is φ = 62552160.

The previous prime is 72217069. The next prime is 72217087. The reversal of 72217079 is 97071227.

It is not a de Polignac number, because 72217079 - 2⁴ = 72217063 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 (72217069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100082 + ... + 100800.

It is an arithmetic number, because the mean of its divisors is an integer number (5158080).

Almost surely, 2^72217079 is an apocalyptic number.

72217079 is a deficient number, since it is larger than the sum of its proper divisors (10312201).

72217079 is a wasteful number, since it uses less digits than its factorization.

72217079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 72217079 is about 8498.0632499411. The cubic root of 72217079 is about 416.4344400517.

The spelling of 72217079 in words is "seventy-two million, two hundred seventeen thousand, seventy-nine".