90697445868 has 24 divisors (see below), whose sum is σ = 211634196480. Its totient is φ = 30231507280.

The previous prime is 90697445851. The next prime is 90697445893. The reversal of 90697445868 is 86854479609.

It is a junction number, because it is equal to n+sod(n) for n = 90697445799 and 90697445808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334153 + ... + 541343.

It is an arithmetic number, because the mean of its divisors is an integer number (8818091520).

Almost surely, 2^90697445868 is an apocalyptic number.

It is an amenable number.

90697445868 is an abundant number, since it is smaller than the sum of its proper divisors (120936750612).

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

90697445868 is a wasteful number, since it uses less digits than its factorization.

90697445868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243677 (or 243675 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 66.

The spelling of 90697445868 in words is "ninety billion, six hundred ninety-seven million, four hundred forty-five thousand, eight hundred sixty-eight".