72907867 has 2 divisors, whose sum is σ = 72907868. Its totient is φ = 72907866.

The previous prime is 72907847. The next prime is 72907949. The reversal of 72907867 is 76870927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72907867 - 2¹⁹ = 72383579 is a prime.

It is not a weakly prime, because it can be changed into another prime (72907837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36453933 + 36453934.

It is an arithmetic number, because the mean of its divisors is an integer number (36453934).

Almost surely, 2^72907867 is an apocalyptic number.

72907867 is a deficient number, since it is larger than the sum of its proper divisors (1).

72907867 is an equidigital number, since it uses as much as digits as its factorization.

72907867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 72907867 is about 8538.6103670328. The cubic root of 72907867 is about 417.7580213897.

The spelling of 72907867 in words is "seventy-two million, nine hundred seven thousand, eight hundred sixty-seven".