2559990 has 16 divisors (see below), whose sum is σ = 6144048. Its totient is φ = 682656.

The previous prime is 2559989. The next prime is 2560021. The reversal of 2559990 is 999552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42637 + ... + 42696.

It is an arithmetic number, because the mean of its divisors is an integer number (384003).

2^2559990 is an apocalyptic number.

2559990 is an abundant number, since it is smaller than the sum of its proper divisors (3584058).

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

2559990 is a wasteful number, since it uses less digits than its factorization.

2559990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85343.

The product of its (nonzero) digits is 36450, while the sum is 39.

The square root of 2559990 is about 1599.9968749969. The cubic root of 2559990 is about 136.7978976114.

The spelling of 2559990 in words is "two million, five hundred fifty-nine thousand, nine hundred ninety".