2563898 has 16 divisors (see below), whose sum is σ = 4092000. Its totient is φ = 1201392.

The previous prime is 2563877. The next prime is 2563901. The reversal of 2563898 is 8983652.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon 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 in 7 ways as a sum of consecutive naturals, for example, 3833 + ... + 4451.

It is an arithmetic number, because the mean of its divisors is an integer number (255750).

2^2563898 is an apocalyptic number.

2563898 is a deficient number, since it is larger than the sum of its proper divisors (1528102).

2563898 is a wasteful number, since it uses less digits than its factorization.

2563898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its digits is 103680, while the sum is 41.

The square root of 2563898 is about 1601.2176616563. The cubic root of 2563898 is about 136.8674726718.

The spelling of 2563898 in words is "two million, five hundred sixty-three thousand, eight hundred ninety-eight".