97663157 has 2 divisors, whose sum is σ = 97663158. Its totient is φ = 97663156.

The previous prime is 97663151. The next prime is 97663169. The reversal of 97663157 is 75136679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97495876 + 167281 = 9874^2 + 409^2 .

It is an emirp because it is prime and its reverse (75136679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97663157 - 2¹² = 97659061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97663151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48831578 + 48831579.

It is an arithmetic number, because the mean of its divisors is an integer number (48831579).

Almost surely, 2^97663157 is an apocalyptic number.

It is an amenable number.

97663157 is a deficient number, since it is larger than the sum of its proper divisors (1).

97663157 is an equidigital number, since it uses as much as digits as its factorization.

97663157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 44.

The square root of 97663157 is about 9882.4671514759. The cubic root of 97663157 is about 460.5147938658.

The spelling of 97663157 in words is "ninety-seven million, six hundred sixty-three thousand, one hundred fifty-seven".