97621723 has 2 divisors, whose sum is σ = 97621724. Its totient is φ = 97621722.

The previous prime is 97621703. The next prime is 97621757. The reversal of 97621723 is 32712679.

It is a weak prime.

It is an emirp because it is prime and its reverse (32712679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97621723 - 2⁵ = 97621691 is a prime.

It is not a weakly prime, because it can be changed into another prime (97621703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48810861 + 48810862.

It is an arithmetic number, because the mean of its divisors is an integer number (48810862).

Almost surely, 2^97621723 is an apocalyptic number.

97621723 is a deficient number, since it is larger than the sum of its proper divisors (1).

97621723 is an equidigital number, since it uses as much as digits as its factorization.

97621723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 37.

The square root of 97621723 is about 9880.3705902157. The cubic root of 97621723 is about 460.4496595491.

The spelling of 97621723 in words is "ninety-seven million, six hundred twenty-one thousand, seven hundred twenty-three".