2640470 has 32 divisors (see below), whose sum is σ = 5522688. Its totient is φ = 890208.

The previous prime is 2640409. The next prime is 2640497. The reversal of 2640470 is 740462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4409 + ... + 4971.

It is an arithmetic number, because the mean of its divisors is an integer number (172584).

2^2640470 is an apocalyptic number.

2640470 is an abundant number, since it is smaller than the sum of its proper divisors (2882218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2640470 is a wasteful number, since it uses less digits than its factorization.

2640470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 2640470 is about 1624.9523069924. The cubic root of 2640470 is about 138.2166658785.

The spelling of 2640470 in words is "two million, six hundred forty thousand, four hundred seventy".