97688977 has 2 divisors, whose sum is σ = 97688978. Its totient is φ = 97688976.

The previous prime is 97688963. The next prime is 97689037. The reversal of 97688977 is 77988679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51394561 + 46294416 = 7169^2 + 6804^2 .

It is a cyclic number.

It is not a de Polignac number, because 97688977 - 2¹¹ = 97686929 is a prime.

It is not a weakly prime, because it can be changed into another prime (97688957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48844488 + 48844489.

It is an arithmetic number, because the mean of its divisors is an integer number (48844489).

Almost surely, 2^97688977 is an apocalyptic number.

It is an amenable number.

97688977 is a deficient number, since it is larger than the sum of its proper divisors (1).

97688977 is an equidigital number, since it uses as much as digits as its factorization.

97688977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 61.

The square root of 97688977 is about 9883.7734190946. The cubic root of 97688977 is about 460.5553736321. Note that the first 3 decimals are identical.

The spelling of 97688977 in words is "ninety-seven million, six hundred eighty-eight thousand, nine hundred seventy-seven".