1690972 has 12 divisors (see below), whose sum is σ = 3000256. Its totient is φ = 833760.

The previous prime is 1690967. The next prime is 1690993. The reversal of 1690972 is 2790961.

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2604 + ... + 3187.

2^1690972 is an apocalyptic number.

It is an amenable number.

1690972 is a deficient number, since it is larger than the sum of its proper divisors (1309284).

1690972 is a wasteful number, since it uses less digits than its factorization.

1690972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868 (or 5866 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 1690972 is about 1300.3737924151. The cubic root of 1690972 is about 119.1366741696.

It can be divided in two parts, 1690 and 972, that added together give a palindrome (2662).

The spelling of 1690972 in words is "one million, six hundred ninety thousand, nine hundred seventy-two".