1997946 has 24 divisors (see below), whose sum is σ = 4490304. Its totient is φ = 665820.

The previous prime is 1997939. The next prime is 1997969. The reversal of 1997946 is 6497991.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1570 + ... + 2541.

It is an arithmetic number, because the mean of its divisors is an integer number (187096).

2^1997946 is an apocalyptic number.

1997946 is an abundant number, since it is smaller than the sum of its proper divisors (2492358).

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

1997946 is an equidigital number, since it uses as much as digits as its factorization.

1997946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128 (or 4116 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 1997946 is about 1413.4871771615. The cubic root of 1997946 is about 125.9489589185.

Adding to 1997946 its sum of digits (45), we get a palindrome (1997991).

The spelling of 1997946 in words is "one million, nine hundred ninety-seven thousand, nine hundred forty-six".