97106391 has 16 divisors (see below), whose sum is σ = 150117120. Its totient is φ = 61922520.

The previous prime is 97106381. The next prime is 97106407. The reversal of 97106391 is 19360179.

97106391 is a `hidden beast` number, since 9 + 7 + 10 + 639 + 1 = 666.

It is not a de Polignac number, because 97106391 - 2¹⁰ = 97105367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97106311) 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 15 ways as a sum of consecutive naturals, for example, 77565 + ... + 78806.

It is an arithmetic number, because the mean of its divisors is an integer number (9382320).

Almost surely, 2^97106391 is an apocalyptic number.

97106391 is a deficient number, since it is larger than the sum of its proper divisors (53010729).

97106391 is a wasteful number, since it uses less digits than its factorization.

97106391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156403 (or 156397 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 97106391 is about 9854.2575062762. The cubic root of 97106391 is about 459.6380123173.

The spelling of 97106391 in words is "ninety-seven million, one hundred six thousand, three hundred ninety-one".