90197968 has 20 divisors (see below), whose sum is σ = 199724320. Its totient is φ = 38656224.

The previous prime is 90197963. The next prime is 90197969. The reversal of 90197968 is 86979109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90197963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402558 + ... + 402781.

It is an arithmetic number, because the mean of its divisors is an integer number (9986216).

Almost surely, 2^90197968 is an apocalyptic number.

It is an amenable number.

90197968 is an abundant number, since it is smaller than the sum of its proper divisors (109526352).

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

90197968 is a wasteful number, since it uses less digits than its factorization.

90197968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805354 (or 805348 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 90197968 is about 9497.2610788585. The cubic root of 90197968 is about 448.4688172627.

The spelling of 90197968 in words is "ninety million, one hundred ninety-seven thousand, nine hundred sixty-eight".