72176479 has 2 divisors, whose sum is σ = 72176480. Its totient is φ = 72176478.

The previous prime is 72176477. The next prime is 72176491. The reversal of 72176479 is 97467127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72176479 - 2¹ = 72176477 is a prime.

Together with 72176477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72176473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36088239 + 36088240.

It is an arithmetic number, because the mean of its divisors is an integer number (36088240).

Almost surely, 2^72176479 is an apocalyptic number.

72176479 is a deficient number, since it is larger than the sum of its proper divisors (1).

72176479 is an equidigital number, since it uses as much as digits as its factorization.

72176479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 43.

The square root of 72176479 is about 8495.6741345228. The cubic root of 72176479 is about 416.3563864580.

The spelling of 72176479 in words is "seventy-two million, one hundred seventy-six thousand, four hundred seventy-nine".