1690834 has 8 divisors (see below), whose sum is σ = 2550960. Its totient is φ = 840516.

The previous prime is 1690831. The next prime is 1690847. The reversal of 1690834 is 4380961.

1690834 is nontrivially palindromic in base 5.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1690796 and 1690805.

It is not an unprimeable number, because it can be changed into a prime (1690831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004 + ... + 2719.

It is an arithmetic number, because the mean of its divisors is an integer number (318870).

2^1690834 is an apocalyptic number.

1690834 is a deficient number, since it is larger than the sum of its proper divisors (860126).

1690834 is a wasteful number, since it uses less digits than its factorization.

1690834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1690834 is about 1300.3207296663. The cubic root of 1690834 is about 119.1334331721.

The spelling of 1690834 in words is "one million, six hundred ninety thousand, eight hundred thirty-four".