97196621 has 2 divisors, whose sum is σ = 97196622. Its totient is φ = 97196620.

The previous prime is 97196543. The next prime is 97196639. The reversal of 97196621 is 12669179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96255721 + 940900 = 9811^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 97196621 - 2¹⁸ = 96934477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97196651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48598310 + 48598311.

It is an arithmetic number, because the mean of its divisors is an integer number (48598311).

Almost surely, 2^97196621 is an apocalyptic number.

It is an amenable number.

97196621 is a deficient number, since it is larger than the sum of its proper divisors (1).

97196621 is an equidigital number, since it uses as much as digits as its factorization.

97196621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 97196621 is about 9858.8346674442. The cubic root of 97196621 is about 459.7803314740.

The spelling of 97196621 in words is "ninety-seven million, one hundred ninety-six thousand, six hundred twenty-one".