97616391 has 8 divisors (see below), whose sum is σ = 131180544. Its totient is φ = 64564920.

The previous prime is 97616341. The next prime is 97616401. The reversal of 97616391 is 19361679.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 97616391 - 2⁷ = 97616263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97616341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127725 + ... + 128486.

It is an arithmetic number, because the mean of its divisors is an integer number (16397568).

Almost surely, 2^97616391 is an apocalyptic number.

97616391 is a deficient number, since it is larger than the sum of its proper divisors (33564153).

97616391 is a wasteful number, since it uses less digits than its factorization.

97616391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256341.

The product of its digits is 61236, while the sum is 42.

The square root of 97616391 is about 9880.1007585955. The cubic root of 97616391 is about 460.4412762979.

The spelling of 97616391 in words is "ninety-seven million, six hundred sixteen thousand, three hundred ninety-one".