1997360 has 20 divisors (see below), whose sum is σ = 4644048. Its totient is φ = 798912.

The previous prime is 1997351. The next prime is 1997407. The reversal of 1997360 is 637991.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1997360.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12404 + ... + 12563.

2^1997360 is an apocalyptic number.

1997360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1997360 is an abundant number, since it is smaller than the sum of its proper divisors (2646688).

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

1997360 is a wasteful number, since it uses less digits than its factorization.

1997360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24980 (or 24974 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1997360 is about 1413.2798732028. The cubic root of 1997360 is about 125.9366440533.

It can be divided in two parts, 19 and 97360, that added together give a palindrome (97379).

The spelling of 1997360 in words is "one million, nine hundred ninety-seven thousand, three hundred sixty".