2640486 has 16 divisors (see below), whose sum is σ = 5371200. Its totient is φ = 865128.

The previous prime is 2640409. The next prime is 2640497. The reversal of 2640486 is 6840462.

It is a super-4 number, since 4×2640486⁴ (a number of 27 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3376 + ... + 4083.

It is an arithmetic number, because the mean of its divisors is an integer number (335700).

2^2640486 is an apocalyptic number.

2640486 is an abundant number, since it is smaller than the sum of its proper divisors (2730714).

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

2640486 is a wasteful number, since it uses less digits than its factorization.

2640486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7523.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 2640486 is about 1624.9572302064. The cubic root of 2640486 is about 138.2169450538.

The spelling of 2640486 in words is "two million, six hundred forty thousand, four hundred eighty-six".