997890596 has 12 divisors (see below), whose sum is σ = 1746548748. Its totient is φ = 498876672.

The previous prime is 997890559. The next prime is 997890613. The reversal of 997890596 is 695098799.

It can be written as a sum of positive squares in 2 ways, for example, as 456676900 + 541213696 = 21370^2 + 23264^2 .

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, 29900 + ... + 53756.

It is an arithmetic number, because the mean of its divisors is an integer number (145545729).

Almost surely, 2^997890596 is an apocalyptic number.

It is an amenable number.

997890596 is a deficient number, since it is larger than the sum of its proper divisors (748658152).

997890596 is a wasteful number, since it uses less digits than its factorization.

997890596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34318 (or 34316 counting only the distinct ones).

The product of its (nonzero) digits is 11022480, while the sum is 62.

The square root of 997890596 is about 31589.4063888513. The cubic root of 997890596 is about 999.2963703548.

The spelling of 997890596 in words is "nine hundred ninety-seven million, eight hundred ninety thousand, five hundred ninety-six".