1690089 has 16 divisors (see below), whose sum is σ = 2465280. Its totient is φ = 1025280.

The previous prime is 1690081. The next prime is 1690097. The reversal of 1690089 is 9800961.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1690081) and next prime (1690097).

It is not a de Polignac number, because 1690089 - 2³ = 1690081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047 + ... + 2115.

It is an arithmetic number, because the mean of its divisors is an integer number (154080).

2^1690089 is an apocalyptic number.

It is an amenable number.

1690089 is a deficient number, since it is larger than the sum of its proper divisors (775191).

1690089 is a wasteful number, since it uses less digits than its factorization.

1690089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1690089 is about 1300.0342303186. The cubic root of 1690089 is about 119.1159334360.

The spelling of 1690089 in words is "one million, six hundred ninety thousand, eighty-nine".