1690068 has 12 divisors (see below), whose sum is σ = 3943520. Its totient is φ = 563352.

The previous prime is 1690067. The next prime is 1690079. The reversal of 1690068 is 8600961.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690067) 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, 70408 + ... + 70431.

2^1690068 is an apocalyptic number.

It is an amenable number.

1690068 is an abundant number, since it is smaller than the sum of its proper divisors (2253452).

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

1690068 is a wasteful number, since it uses less digits than its factorization.

1690068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140846 (or 140844 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1690068 is about 1300.0261535831. The cubic root of 1690068 is about 119.1154400803.

The spelling of 1690068 in words is "one million, six hundred ninety thousand, sixty-eight".