1690213 has 8 divisors (see below), whose sum is σ = 1994240. Its totient is φ = 1401840.

The previous prime is 1690211. The next prime is 1690217. The reversal of 1690213 is 3120961.

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

It is a cyclic number.

It is not a de Polignac number, because 1690213 - 2¹ = 1690211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690211) 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 7 ways as a sum of consecutive naturals, for example, 3678 + ... + 4111.

It is an arithmetic number, because the mean of its divisors is an integer number (249280).

2^1690213 is an apocalyptic number.

It is an amenable number.

1690213 is a deficient number, since it is larger than the sum of its proper divisors (304027).

1690213 is an equidigital number, since it uses as much as digits as its factorization.

1690213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7827.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1690213 is about 1300.0819204958. The cubic root of 1690213 is about 119.1188465004.

The spelling of 1690213 in words is "one million, six hundred ninety thousand, two hundred thirteen".