97985686 has 4 divisors (see below), whose sum is σ = 146978532. Its totient is φ = 48992842.

The previous prime is 97985683. The next prime is 97985689. The reversal of 97985686 is 68658979.

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

It is an interprime number because it is at equal distance from previous prime (97985683) and next prime (97985689).

It is a self number, because there is not a number n which added to its sum of digits gives 97985686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97985683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24496420 + ... + 24496423.

It is an arithmetic number, because the mean of its divisors is an integer number (36744633).

Almost surely, 2^97985686 is an apocalyptic number.

97985686 is a deficient number, since it is larger than the sum of its proper divisors (48992846).

97985686 is a wasteful number, since it uses less digits than its factorization.

97985686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48992845.

The product of its digits is 6531840, while the sum is 58.

The square root of 97985686 is about 9898.7719440343. The cubic root of 97985686 is about 461.0211812472.

The spelling of 97985686 in words is "ninety-seven million, nine hundred eighty-five thousand, six hundred eighty-six".