2640862 has 8 divisors (see below), whose sum is σ = 4527216. Its totient is φ = 1131792.

The previous prime is 2640857. The next prime is 2640863. The reversal of 2640862 is 2680462.

2640862 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2640862 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 2640862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94303 + ... + 94330.

It is an arithmetic number, because the mean of its divisors is an integer number (565902).

2^2640862 is an apocalyptic number.

2640862 is a deficient number, since it is larger than the sum of its proper divisors (1886354).

2640862 is a wasteful number, since it uses less digits than its factorization.

2640862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188642.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2640862 is about 1625.0729214408. The cubic root of 2640862 is about 138.2235053493.

The spelling of 2640862 in words is "two million, six hundred forty thousand, eight hundred sixty-two".