1690070 has 8 divisors (see below), whose sum is σ = 3042144. Its totient is φ = 676024.

The previous prime is 1690067. The next prime is 1690079. The reversal of 1690070 is 700961.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84494 + ... + 84513.

It is an arithmetic number, because the mean of its divisors is an integer number (380268).

2^1690070 is an apocalyptic number.

1690070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1690070 is a deficient number, since it is larger than the sum of its proper divisors (1352074).

1690070 is a wasteful number, since it uses less digits than its factorization.

1690070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169014.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1690070 is about 1300.0269227981. The cubic root of 1690070 is about 119.1154870668.

The spelling of 1690070 in words is "one million, six hundred ninety thousand, seventy".