2558966 has 4 divisors (see below), whose sum is σ = 3838452. Its totient is φ = 1279482.

The previous prime is 2558953. The next prime is 2559013. The reversal of 2558966 is 6698552.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639740 + ... + 639743.

It is an arithmetic number, because the mean of its divisors is an integer number (959613).

2^2558966 is an apocalyptic number.

2558966 is a deficient number, since it is larger than the sum of its proper divisors (1279486).

2558966 is a wasteful number, since it uses less digits than its factorization.

2558966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279485.

The product of its digits is 129600, while the sum is 41.

The square root of 2558966 is about 1599.6768423654. The cubic root of 2558966 is about 136.7796553880.

The spelling of 2558966 in words is "two million, five hundred fifty-eight thousand, nine hundred sixty-six".