97678988 has 12 divisors (see below), whose sum is σ = 186478152. Its totient is φ = 44399520.

The previous prime is 97678961. The next prime is 97679017. The reversal of 97678988 is 88987679.

It is a self number, because there is not a number n which added to its sum of digits gives 97678988.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109945 + ... + 1110032.

It is an arithmetic number, because the mean of its divisors is an integer number (15539846).

Almost surely, 2^97678988 is an apocalyptic number.

It is an amenable number.

97678988 is a deficient number, since it is larger than the sum of its proper divisors (88799164).

97678988 is a wasteful number, since it uses less digits than its factorization.

97678988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219992 (or 2219990 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 62.

The square root of 97678988 is about 9883.2680829774. The cubic root of 97678988 is about 460.5396753600.

The spelling of 97678988 in words is "ninety-seven million, six hundred seventy-eight thousand, nine hundred eighty-eight".