97680257 has 2 divisors, whose sum is σ = 97680258. Its totient is φ = 97680256.

The previous prime is 97680227. The next prime is 97680269. The reversal of 97680257 is 75208679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61089856 + 36590401 = 7816^2 + 6049^2 .

It is a cyclic number.

It is not a de Polignac number, because 97680257 - 2⁸ = 97680001 is a prime.

It is not a weakly prime, because it can be changed into another prime (97680227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48840128 + 48840129.

It is an arithmetic number, because the mean of its divisors is an integer number (48840129).

Almost surely, 2^97680257 is an apocalyptic number.

It is an amenable number.

97680257 is a deficient number, since it is larger than the sum of its proper divisors (1).

97680257 is an equidigital number, since it uses as much as digits as its factorization.

97680257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 97680257 is about 9883.3322821809. The cubic root of 97680257 is about 460.5416697238.

The spelling of 97680257 in words is "ninety-seven million, six hundred eighty thousand, two hundred fifty-seven".