2190659 has 4 divisors (see below), whose sum is σ = 2249904. Its totient is φ = 2131416.

The previous prime is 2190653. The next prime is 2190679. The reversal of 2190659 is 9560912.

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

It is a cyclic number.

It is not a de Polignac number, because 2190659 - 2⁸ = 2190403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2190653) 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, 29567 + ... + 29640.

It is an arithmetic number, because the mean of its divisors is an integer number (562476).

2^2190659 is an apocalyptic number.

2190659 is a deficient number, since it is larger than the sum of its proper divisors (59245).

2190659 is an equidigital number, since it uses as much as digits as its factorization.

2190659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59244.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 2190659 is about 1480.0874974136. The cubic root of 2190659 is about 129.8748104481.

The spelling of 2190659 in words is "two million, one hundred ninety thousand, six hundred fifty-nine".