897588990 has 24 divisors (see below), whose sum is σ = 2333731608. Its totient is φ = 239357040.

The previous prime is 897588971. The next prime is 897589019. The reversal of 897588990 is 99885798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4986516 + ... + 4986695.

It is an arithmetic number, because the mean of its divisors is an integer number (97238817).

Almost surely, 2^897588990 is an apocalyptic number.

897588990 is an abundant number, since it is smaller than the sum of its proper divisors (1436142618).

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

897588990 is a wasteful number, since it uses less digits than its factorization.

897588990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973224 (or 9973221 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 63.

The square root of 897588990 is about 29959.7895519979. The cubic root of 897588990 is about 964.6264637493.

The spelling of 897588990 in words is "eight hundred ninety-seven million, five hundred eighty-eight thousand, nine hundred ninety".