97631563 has 2 divisors, whose sum is σ = 97631564. Its totient is φ = 97631562.

The previous prime is 97631551. The next prime is 97631579. The reversal of 97631563 is 36513679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97631563 - 2⁵ = 97631531 is a prime.

It is not a weakly prime, because it can be changed into another prime (97631503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48815781 + 48815782.

It is an arithmetic number, because the mean of its divisors is an integer number (48815782).

Almost surely, 2^97631563 is an apocalyptic number.

97631563 is a deficient number, since it is larger than the sum of its proper divisors (1).

97631563 is an equidigital number, since it uses as much as digits as its factorization.

97631563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 97631563 is about 9880.8685346988. The cubic root of 97631563 is about 460.4651297139.

The spelling of 97631563 in words is "ninety-seven million, six hundred thirty-one thousand, five hundred sixty-three".