97565761 has 4 divisors (see below), whose sum is σ = 97599024. Its totient is φ = 97532500.

The previous prime is 97565731. The next prime is 97565807. The reversal of 97565761 is 16756579.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97565761 - 2⁹ = 97565249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97565731) 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, 11755 + ... + 18256.

It is an arithmetic number, because the mean of its divisors is an integer number (24399756).

Almost surely, 2^97565761 is an apocalyptic number.

It is an amenable number.

97565761 is a deficient number, since it is larger than the sum of its proper divisors (33263).

97565761 is a wasteful number, since it uses less digits than its factorization.

97565761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33262.

The product of its digits is 396900, while the sum is 46.

The square root of 97565761 is about 9877.5382054437. The cubic root of 97565761 is about 460.3616579294.

The spelling of 97565761 in words is "ninety-seven million, five hundred sixty-five thousand, seven hundred sixty-one".