97678692 has 18 divisors (see below), whose sum is σ = 246910118. Its totient is φ = 32559552.

The previous prime is 97678673. The next prime is 97678717. The reversal of 97678692 is 29687679.

It can be written as a sum of positive squares in only one way, i.e., 62821476 + 34857216 = 7926^2 + 5904^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×97678692² = 19082253741661728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1356613 + ... + 1356684.

Almost surely, 2^97678692 is an apocalyptic number.

It is an amenable number.

97678692 is an abundant number, since it is smaller than the sum of its proper divisors (149231426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97678692 is a wasteful number, since it uses less digits than its factorization.

97678692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713307 (or 2713302 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 97678692 is about 9883.2531081623. The cubic root of 97678692 is about 460.5392101631.

The spelling of 97678692 in words is "ninety-seven million, six hundred seventy-eight thousand, six hundred ninety-two".