1690141 has 4 divisors (see below), whose sum is σ = 1705212. Its totient is φ = 1675072.

The previous prime is 1690121. The next prime is 1690153. The reversal of 1690141 is 1410961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177241 + 1512900 = 421^2 + 1230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1690141 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690121) 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, 7366 + ... + 7591.

It is an arithmetic number, because the mean of its divisors is an integer number (426303).

2^1690141 is an apocalyptic number.

It is an amenable number.

1690141 is a deficient number, since it is larger than the sum of its proper divisors (15071).

1690141 is a wasteful number, since it uses less digits than its factorization.

1690141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15070.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1690141 is about 1300.0542296381. The cubic root of 1690141 is about 119.1171550610.

The spelling of 1690141 in words is "one million, six hundred ninety thousand, one hundred forty-one".