2640195 has 48 divisors (see below), whose sum is σ = 4953312. Its totient is φ = 1347840.

The previous prime is 2640181. The next prime is 2640217. The reversal of 2640195 is 5910462.

2640195 is a `hidden beast` number, since 2 + 640 + 19 + 5 = 666.

It is not a de Polignac number, because 2640195 - 2⁵ = 2640163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49789 + ... + 49841.

It is an arithmetic number, because the mean of its divisors is an integer number (103194).

2^2640195 is an apocalyptic number.

2640195 is a deficient number, since it is larger than the sum of its proper divisors (2313117).

2640195 is an equidigital number, since it uses as much as digits as its factorization.

2640195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2640195 is about 1624.8676869210. The cubic root of 2640195 is about 138.2118673764.

The spelling of 2640195 in words is "two million, six hundred forty thousand, one hundred ninety-five".