97998642 has 48 divisors (see below), whose sum is σ = 256943232. Its totient is φ = 26352000.

The previous prime is 97998601. The next prime is 97998647. The reversal of 97998642 is 24689979.

It is not an unprimeable number, because it can be changed into a prime (97998647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20734 + ... + 25017.

It is an arithmetic number, because the mean of its divisors is an integer number (5352984).

Almost surely, 2^97998642 is an apocalyptic number.

97998642 is an abundant number, since it is smaller than the sum of its proper divisors (158944590).

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

97998642 is a wasteful number, since it uses less digits than its factorization.

97998642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45783 (or 45780 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 97998642 is about 9899.4263470163. The cubic root of 97998642 is about 461.0414996135.

The spelling of 97998642 in words is "ninety-seven million, nine hundred ninety-eight thousand, six hundred forty-two".