1690122 has 16 divisors (see below), whose sum is σ = 3863232. Its totient is φ = 482880.

The previous prime is 1690121. The next prime is 1690153. The reversal of 1690122 is 2210961.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1690121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20079 + ... + 20162.

It is an arithmetic number, because the mean of its divisors is an integer number (241452).

2^1690122 is an apocalyptic number.

1690122 is an abundant number, since it is smaller than the sum of its proper divisors (2173110).

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

1690122 is a wasteful number, since it uses less digits than its factorization.

1690122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40253.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1690122 is about 1300.0469222301. The cubic root of 1690122 is about 119.1167087009.

The spelling of 1690122 in words is "one million, six hundred ninety thousand, one hundred twenty-two".