1690325 has 24 divisors (see below), whose sum is σ = 2583168. Its totient is φ = 1068480.

The previous prime is 1690319. The next prime is 1690349. The reversal of 1690325 is 5230961.

It is not a de Polignac number, because 1690325 - 2⁴ = 1690309 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1690294 and 1690303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1904 + ... + 2646.

It is an arithmetic number, because the mean of its divisors is an integer number (107632).

2^1690325 is an apocalyptic number.

It is an amenable number.

1690325 is a deficient number, since it is larger than the sum of its proper divisors (892843).

1690325 is a wasteful number, since it uses less digits than its factorization.

1690325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1690325 is about 1300.1249939910. The cubic root of 1690325 is about 119.1214775330.

The spelling of 1690325 in words is "one million, six hundred ninety thousand, three hundred twenty-five".