2566670 has 32 divisors (see below), whose sum is σ = 4866048. Its totient is φ = 973728.

The previous prime is 2566667. The next prime is 2566673. The reversal of 2566670 is 766652.

2566670 = 223² + 224² + ... + 265².

It is an interprime number because it is at equal distance from previous prime (2566667) and next prime (2566673).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20147 + ... + 20273.

It is an arithmetic number, because the mean of its divisors is an integer number (152064).

2^2566670 is an apocalyptic number.

2566670 is a deficient number, since it is larger than the sum of its proper divisors (2299378).

2566670 is a wasteful number, since it uses less digits than its factorization.

2566670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 2566670 is about 1602.0830190724. The cubic root of 2566670 is about 136.9167804038.

The spelling of 2566670 in words is "two million, five hundred sixty-six thousand, six hundred seventy".