2563870 has 16 divisors (see below), whose sum is σ = 4672080. Its totient is φ = 1012864.

The previous prime is 2563867. The next prime is 2563877. The reversal of 2563870 is 783652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563877) by changing a digit.

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, 715 + ... + 2374.

It is an arithmetic number, because the mean of its divisors is an integer number (292005).

2^2563870 is an apocalyptic number.

2563870 is a deficient number, since it is larger than the sum of its proper divisors (2108210).

2563870 is a wasteful number, since it uses less digits than its factorization.

2563870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2563870 is about 1601.2089182864. The cubic root of 2563870 is about 136.8669744327.

The spelling of 2563870 in words is "two million, five hundred sixty-three thousand, eight hundred seventy".