2569990 has 16 divisors (see below), whose sum is σ = 4650048. Its totient is φ = 1022656.

The previous prime is 2569979. The next prime is 2570011. The reversal of 2569990 is 999652.

2569990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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, 1779 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (290628).

2^2569990 is an apocalyptic number.

2569990 is a deficient number, since it is larger than the sum of its proper divisors (2080058).

2569990 is a wasteful number, since it uses less digits than its factorization.

2569990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 2569990 is about 1603.1188352708. The cubic root of 2569990 is about 136.9757891399.

The spelling of 2569990 in words is "two million, five hundred sixty-nine thousand, nine hundred ninety".