97664429 has 2 divisors, whose sum is σ = 97664430. Its totient is φ = 97664428.

The previous prime is 97664401. The next prime is 97664467. The reversal of 97664429 is 92446679.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92833225 + 4831204 = 9635^2 + 2198^2 .

It is a cyclic number.

It is not a de Polignac number, because 97664429 - 2²⁰ = 96615853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97664029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48832214 + 48832215.

It is an arithmetic number, because the mean of its divisors is an integer number (48832215).

Almost surely, 2^97664429 is an apocalyptic number.

It is an amenable number.

97664429 is a deficient number, since it is larger than the sum of its proper divisors (1).

97664429 is an equidigital number, since it uses as much as digits as its factorization.

97664429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 97664429 is about 9882.5315076654. The cubic root of 97664429 is about 460.5167931604.

The spelling of 97664429 in words is "ninety-seven million, six hundred sixty-four thousand, four hundred twenty-nine".