997308808 has 16 divisors (see below), whose sum is σ = 1979951580. Its totient is φ = 469321728.

The previous prime is 997308799. The next prime is 997308833. The reversal of 997308808 is 808803799.

It can be written as a sum of positive squares in 2 ways, for example, as 946300644 + 51008164 = 30762^2 + 7142^2 .

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, 3666441 + ... + 3666712.

Almost surely, 2^997308808 is an apocalyptic number.

It is an amenable number.

997308808 is a deficient number, since it is larger than the sum of its proper divisors (982642772).

997308808 is a wasteful number, since it uses less digits than its factorization.

997308808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333176 (or 7333172 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 997308808 is about 31580.1964528405. The cubic root of 997308808 is about 999.1021300709.

The spelling of 997308808 in words is "nine hundred ninety-seven million, three hundred eight thousand, eight hundred eight".