97981694 has 8 divisors (see below), whose sum is σ = 147136608. Its totient is φ = 48936160.

The previous prime is 97981657. The next prime is 97981703. The reversal of 97981694 is 49618979.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 25067 + ... + 28710.

It is an arithmetic number, because the mean of its divisors is an integer number (18392076).

Almost surely, 2^97981694 is an apocalyptic number.

97981694 is a deficient number, since it is larger than the sum of its proper divisors (49154914).

97981694 is a wasteful number, since it uses less digits than its factorization.

97981694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54690.

The product of its digits is 979776, while the sum is 53.

The square root of 97981694 is about 9898.5703008061. The cubic root of 97981694 is about 461.0149203955.

The spelling of 97981694 in words is "ninety-seven million, nine hundred eighty-one thousand, six hundred ninety-four".