997380 has 48 divisors (see below), whose sum is σ = 3104640. Its totient is φ = 265824.

The previous prime is 997379. The next prime is 997391. The reversal of 997380 is 83799.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384 + ... + 1463.

It is an arithmetic number, because the mean of its divisors is an integer number (64680).

2⁹⁹⁷³⁸⁰ is an apocalyptic number.

997380 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

997380 is an abundant number, since it is smaller than the sum of its proper divisors (2107260).

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

997380 is a wasteful number, since it uses less digits than its factorization.

997380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 997380 is about 998.6891408241. The cubic root of 997380 is about 99.9125902843.

The spelling of 997380 in words is "nine hundred ninety-seven thousand, three hundred eighty".