97636261 has 2 divisors, whose sum is σ = 97636262. Its totient is φ = 97636260.

The previous prime is 97636237. The next prime is 97636283. The reversal of 97636261 is 16263679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79103236 + 18533025 = 8894^2 + 4305^2 .

It is a cyclic number.

It is not a de Polignac number, because 97636261 - 2⁹ = 97635749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97636361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48818130 + 48818131.

It is an arithmetic number, because the mean of its divisors is an integer number (48818131).

Almost surely, 2^97636261 is an apocalyptic number.

It is an amenable number.

97636261 is a deficient number, since it is larger than the sum of its proper divisors (1).

97636261 is an equidigital number, since it uses as much as digits as its factorization.

97636261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 97636261 is about 9881.1062639767. The cubic root of 97636261 is about 460.4725154077.

The spelling of 97636261 in words is "ninety-seven million, six hundred thirty-six thousand, two hundred sixty-one".