97766957 has 4 divisors (see below), whose sum is σ = 99369756. Its totient is φ = 96164160.

The previous prime is 97766947. The next prime is 97766959. The reversal of 97766957 is 75966779.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52258441 + 45508516 = 7229^2 + 6746^2 .

It is a cyclic number.

It is not a de Polignac number, because 97766957 - 2⁴ = 97766941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97766959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801308 + ... + 801429.

It is an arithmetic number, because the mean of its divisors is an integer number (24842439).

Almost surely, 2^97766957 is an apocalyptic number.

It is an amenable number.

97766957 is a deficient number, since it is larger than the sum of its proper divisors (1602799).

97766957 is a wasteful number, since it uses less digits than its factorization.

97766957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602798.

The product of its digits is 5000940, while the sum is 56.

The square root of 97766957 is about 9887.7174818054. The cubic root of 97766957 is about 460.6778867933.

The spelling of 97766957 in words is "ninety-seven million, seven hundred sixty-six thousand, nine hundred fifty-seven".