2645985 has 16 divisors (see below), whose sum is σ = 4253760. Its totient is φ = 1404480.

The previous prime is 2645977. The next prime is 2645987. The reversal of 2645985 is 5895462.

It is not a de Polignac number, because 2645985 - 2³ = 2645977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2645987) 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, 6075 + ... + 6495.

It is an arithmetic number, because the mean of its divisors is an integer number (265860).

2^2645985 is an apocalyptic number.

It is an amenable number.

2645985 is a deficient number, since it is larger than the sum of its proper divisors (1607775).

2645985 is a wasteful number, since it uses less digits than its factorization.

2645985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its digits is 86400, while the sum is 39.

The square root of 2645985 is about 1626.6483947061. The cubic root of 2645985 is about 138.3128273987.

The spelling of 2645985 in words is "two million, six hundred forty-five thousand, nine hundred eighty-five".