72464971 has 2 divisors, whose sum is σ = 72464972. Its totient is φ = 72464970.

The previous prime is 72464969. The next prime is 72465013. The reversal of 72464971 is 17946427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72464971 - 2¹ = 72464969 is a prime.

Together with 72464969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72464911) 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, 36232485 + 36232486.

It is an arithmetic number, because the mean of its divisors is an integer number (36232486).

Almost surely, 2^72464971 is an apocalyptic number.

72464971 is a deficient number, since it is larger than the sum of its proper divisors (1).

72464971 is an equidigital number, since it uses as much as digits as its factorization.

72464971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 72464971 is about 8512.6359607351. The cubic root of 72464971 is about 416.9103795197.

The spelling of 72464971 in words is "seventy-two million, four hundred sixty-four thousand, nine hundred seventy-one".