72800971 has 2 divisors, whose sum is σ = 72800972. Its totient is φ = 72800970.

The previous prime is 72800969. The next prime is 72800977. The reversal of 72800971 is 17900827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72800971 - 2¹ = 72800969 is a prime.

Together with 72800969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72800977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36400485 + 36400486.

It is an arithmetic number, because the mean of its divisors is an integer number (36400486).

Almost surely, 2^72800971 is an apocalyptic number.

72800971 is a deficient number, since it is larger than the sum of its proper divisors (1).

72800971 is an equidigital number, since it uses as much as digits as its factorization.

72800971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 72800971 is about 8532.3485043685. The cubic root of 72800971 is about 417.5537521479.

The spelling of 72800971 in words is "seventy-two million, eight hundred thousand, nine hundred seventy-one".