97656893 has 2 divisors, whose sum is σ = 97656894. Its totient is φ = 97656892.

The previous prime is 97656883. The next prime is 97656917. The reversal of 97656893 is 39865679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77827684 + 19829209 = 8822^2 + 4453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97656893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97656863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48828446 + 48828447.

It is an arithmetic number, because the mean of its divisors is an integer number (48828447).

Almost surely, 2^97656893 is an apocalyptic number.

It is an amenable number.

97656893 is a deficient number, since it is larger than the sum of its proper divisors (1).

97656893 is an equidigital number, since it uses as much as digits as its factorization.

97656893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 97656893 is about 9882.1502214852. The cubic root of 97656893 is about 460.5049480296.

The spelling of 97656893 in words is "ninety-seven million, six hundred fifty-six thousand, eight hundred ninety-three".