97916765 has 4 divisors (see below), whose sum is σ = 117500124. Its totient is φ = 78333408.

The previous prime is 97916737. The next prime is 97916779. The reversal of 97916765 is 56761979.

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 43112356 + 54804409 = 6566^2 + 7403^2 .

It is a cyclic number.

It is not a de Polignac number, because 97916765 - 2²⁴ = 81139549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9791672 + ... + 9791681.

It is an arithmetic number, because the mean of its divisors is an integer number (29375031).

Almost surely, 2^97916765 is an apocalyptic number.

It is an amenable number.

97916765 is a deficient number, since it is larger than the sum of its proper divisors (19583359).

97916765 is a wasteful number, since it uses less digits than its factorization.

97916765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19583358.

The product of its digits is 714420, while the sum is 50.

The square root of 97916765 is about 9895.2900412267. The cubic root of 97916765 is about 460.9130651377.

The spelling of 97916765 in words is "ninety-seven million, nine hundred sixteen thousand, seven hundred sixty-five".