997590770 has 64 divisors (see below), whose sum is σ = 2081604096. Its totient is φ = 340193280.

The previous prime is 997590761. The next prime is 997590791. The reversal of 997590770 is 77095799.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 629399 + ... + 630981.

It is an arithmetic number, because the mean of its divisors is an integer number (32525064).

Almost surely, 2^997590770 is an apocalyptic number.

997590770 is an abundant number, since it is smaller than the sum of its proper divisors (1084013326).

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

997590770 is a wasteful number, since it uses less digits than its factorization.

997590770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 1250235, while the sum is 53.

The square root of 997590770 is about 31584.6603591047. The cubic root of 997590770 is about 999.1962775366.

The spelling of 997590770 in words is "nine hundred ninety-seven million, five hundred ninety thousand, seven hundred seventy".