997362820 has 24 divisors (see below), whose sum is σ = 2204697600. Its totient is φ = 377947872.

The previous prime is 997362811. The next prime is 997362841. The reversal of 997362820 is 28263799.

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, 1311940 + ... + 1312699.

It is an arithmetic number, because the mean of its divisors is an integer number (91862400).

Almost surely, 2^997362820 is an apocalyptic number.

It is an amenable number.

997362820 is an abundant number, since it is smaller than the sum of its proper divisors (1207334780).

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

997362820 is a wasteful number, since it uses less digits than its factorization.

997362820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624667 (or 2624665 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 997362820 is about 31581.0515974373. The cubic root of 997362820 is about 999.1201661194.

The spelling of 997362820 in words is "nine hundred ninety-seven million, three hundred sixty-two thousand, eight hundred twenty".