97709693 has 4 divisors (see below), whose sum is σ = 103457340. Its totient is φ = 91962048.

The previous prime is 97709657. The next prime is 97709699. The reversal of 97709693 is 39690779.

It is a happy number.

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 44448889 + 53260804 = 6667^2 + 7298^2 .

It is a cyclic number.

It is not a de Polignac number, because 97709693 - 2²⁴ = 80932477 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 (97709699) 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, 2873798 + ... + 2873831.

It is an arithmetic number, because the mean of its divisors is an integer number (25864335).

Almost surely, 2^97709693 is an apocalyptic number.

It is an amenable number.

97709693 is a deficient number, since it is larger than the sum of its proper divisors (5747647).

97709693 is a wasteful number, since it uses less digits than its factorization.

97709693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747646.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 97709693 is about 9884.8213438585. The cubic root of 97709693 is about 460.5879265741.

The spelling of 97709693 in words is "ninety-seven million, seven hundred nine thousand, six hundred ninety-three".