97659901 has 2 divisors, whose sum is σ = 97659902. Its totient is φ = 97659900.

The previous prime is 97659899. The next prime is 97659929. The reversal of 97659901 is 10995679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97495876 + 164025 = 9874^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 97659901 - 2¹ = 97659899 is a prime.

Together with 97659899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97659301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48829950 + 48829951.

It is an arithmetic number, because the mean of its divisors is an integer number (48829951).

Almost surely, 2^97659901 is an apocalyptic number.

97659901 is the 4420-th centered decagonal number.

It is an amenable number.

97659901 is a deficient number, since it is larger than the sum of its proper divisors (1).

97659901 is an equidigital number, since it uses as much as digits as its factorization.

97659901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 97659901 is about 9882.3024139114. The cubic root of 97659901 is about 460.5096760954.

The spelling of 97659901 in words is "ninety-seven million, six hundred fifty-nine thousand, nine hundred one".