2640827 has 8 divisors (see below), whose sum is σ = 3122400. Its totient is φ = 2185344.

The previous prime is 2640823. The next prime is 2640853. The reversal of 2640827 is 7280462.

2640827 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.

It is not a de Polignac number, because 2640827 - 2² = 2640823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

2640827 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 2640827.

It is not an unprimeable number, because it can be changed into a prime (2640821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6302 + ... + 6707.

It is an arithmetic number, because the mean of its divisors is an integer number (390300).

2^2640827 is an apocalyptic number.

2640827 is a deficient number, since it is larger than the sum of its proper divisors (481573).

2640827 is a wasteful number, since it uses less digits than its factorization.

2640827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13045.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2640827 is about 1625.0621526576. The cubic root of 2640827 is about 138.2228947097. Note that the first 3 decimals are identical.

The spelling of 2640827 in words is "two million, six hundred forty thousand, eight hundred twenty-seven".