2640146 has 16 divisors (see below), whose sum is σ = 4139520. Its totient is φ = 1261440.

The previous prime is 2640139. The next prime is 2640163. The reversal of 2640146 is 6410462.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5795 + ... + 6233.

It is an arithmetic number, because the mean of its divisors is an integer number (258720).

2^2640146 is an apocalyptic number.

2640146 is a deficient number, since it is larger than the sum of its proper divisors (1499374).

2640146 is a wasteful number, since it uses less digits than its factorization.

With its successor (2640147) it forms an eRAP, since the sums of their prime factors are consecutive (569 and 570).

2640146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2640146 is about 1624.8526087002. The cubic root of 2640146 is about 138.2110123356.

The spelling of 2640146 in words is "two million, six hundred forty thousand, one hundred forty-six".