1997350 has 24 divisors (see below), whose sum is σ = 3805560. Its totient is φ = 779520.

The previous prime is 1997341. The next prime is 1997351. The reversal of 1997350 is 537991.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1686 + ... + 2614.

It is an arithmetic number, because the mean of its divisors is an integer number (158565).

2^1997350 is an apocalyptic number.

1997350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1997350 is a deficient number, since it is larger than the sum of its proper divisors (1808210).

1997350 is a wasteful number, since it uses less digits than its factorization.

1997350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 1997350 is about 1413.2763353287. The cubic root of 1997350 is about 125.9364338811.

The spelling of 1997350 in words is "one million, nine hundred ninety-seven thousand, three hundred fifty".