2640946 has 24 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 1028280.

The previous prime is 2640941. The next prime is 2640947. The reversal of 2640946 is 6490462.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2640941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 915 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

2^2640946 is an apocalyptic number.

2640946 is a deficient number, since it is larger than the sum of its proper divisors (2338574).

2640946 is a wasteful number, since it uses less digits than its factorization.

2640946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 2640946 is about 1625.0987662293. The cubic root of 2640946 is about 138.2249708621.

The spelling of 2640946 in words is "two million, six hundred forty thousand, nine hundred forty-six".