2645655 has 16 divisors (see below), whose sum is σ = 4456320. Its totient is φ = 1336608.

The previous prime is 2645651. The next prime is 2645663. The reversal of 2645655 is 5565462.

It is a happy number.

It is not a de Polignac number, because 2645655 - 2² = 2645651 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6⁶ + 4⁸ + 5³ + 6⁷ + 5⁷ + 5⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4357 + ... + 4926.

It is an arithmetic number, because the mean of its divisors is an integer number (278520).

2^2645655 is an apocalyptic number.

2645655 is a deficient number, since it is larger than the sum of its proper divisors (1810665).

2645655 is a wasteful number, since it uses less digits than its factorization.

2645655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9310.

The product of its digits is 36000, while the sum is 33.

The square root of 2645655 is about 1626.5469559776. The cubic root of 2645655 is about 138.3070771606.

The spelling of 2645655 in words is "two million, six hundred forty-five thousand, six hundred fifty-five".