97631579 has 2 divisors, whose sum is σ = 97631580. Its totient is φ = 97631578.

The previous prime is 97631563. The next prime is 97631623. The reversal of 97631579 is 97513679.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97631579 - 2⁴ = 97631563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97631279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48815789 + 48815790.

It is an arithmetic number, because the mean of its divisors is an integer number (48815790).

Almost surely, 2^97631579 is an apocalyptic number.

97631579 is a deficient number, since it is larger than the sum of its proper divisors (1).

97631579 is an equidigital number, since it uses as much as digits as its factorization.

97631579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 357210, while the sum is 47.

The square root of 97631579 is about 9880.8693443442. The cubic root of 97631579 is about 460.4651548678.

The spelling of 97631579 in words is "ninety-seven million, six hundred thirty-one thousand, five hundred seventy-nine".