72847667 has 2 divisors, whose sum is σ = 72847668. Its totient is φ = 72847666.

The previous prime is 72847651. The next prime is 72847673. The reversal of 72847667 is 76674827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72847667 - 2⁴ = 72847651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72847627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36423833 + 36423834.

It is an arithmetic number, because the mean of its divisors is an integer number (36423834).

Almost surely, 2^72847667 is an apocalyptic number.

72847667 is a deficient number, since it is larger than the sum of its proper divisors (1).

72847667 is an equidigital number, since it uses as much as digits as its factorization.

72847667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 47.

The square root of 72847667 is about 8535.0844752703. The cubic root of 72847667 is about 417.6430088451.

The spelling of 72847667 in words is "seventy-two million, eight hundred forty-seven thousand, six hundred sixty-seven".