97610591 has 4 divisors (see below), whose sum is σ = 105119112. Its totient is φ = 90102072.

The previous prime is 97610567. The next prime is 97610621. The reversal of 97610591 is 19501679.

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 97610591 - 2¹⁴ = 97594207 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 (97610521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3754241 + ... + 3754266.

It is an arithmetic number, because the mean of its divisors is an integer number (26279778).

Almost surely, 2^97610591 is an apocalyptic number.

97610591 is a deficient number, since it is larger than the sum of its proper divisors (7508521).

97610591 is a wasteful number, since it uses less digits than its factorization.

97610591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508520.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 97610591 is about 9879.8072349616. The cubic root of 97610591 is about 460.4321568858.

The spelling of 97610591 in words is "ninety-seven million, six hundred ten thousand, five hundred ninety-one".