97536391 has 4 divisors (see below), whose sum is σ = 97647984. Its totient is φ = 97424800.

The previous prime is 97536379. The next prime is 97536401. The reversal of 97536391 is 19363579.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 97536391 - 2²³ = 89147783 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 (97536301) 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, 54475 + ... + 56236.

It is an arithmetic number, because the mean of its divisors is an integer number (24411996).

Almost surely, 2^97536391 is an apocalyptic number.

97536391 is a deficient number, since it is larger than the sum of its proper divisors (111593).

97536391 is a wasteful number, since it uses less digits than its factorization.

97536391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111592.

The product of its digits is 153090, while the sum is 43.

The square root of 97536391 is about 9876.0513870676. The cubic root of 97536391 is about 460.3154594178.

The spelling of 97536391 in words is "ninety-seven million, five hundred thirty-six thousand, three hundred ninety-one".