2645988 has 24 divisors (see below), whose sum is σ = 6202560. Its totient is φ = 877920.

The previous prime is 2645987. The next prime is 2646001. The reversal of 2645988 is 8895462.

It is a super-2 number, since 2×2645988² = 14002504992288, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3378 + ... + 4086.

It is an arithmetic number, because the mean of its divisors is an integer number (258440).

2^2645988 is an apocalyptic number.

It is an amenable number.

2645988 is an abundant number, since it is smaller than the sum of its proper divisors (3556572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2645988 is a wasteful number, since it uses less digits than its factorization.

2645988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1025 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 2645988 is about 1626.6493168474. The cubic root of 2645988 is about 138.3128796714.

The spelling of 2645988 in words is "two million, six hundred forty-five thousand, nine hundred eighty-eight".