2648664 has 24 divisors (see below), whose sum is σ = 7173660. Its totient is φ = 882864.

The previous prime is 2648629. The next prime is 2648669. The reversal of 2648664 is 4668462.

It is a happy number.

2648664 is a `hidden beast` number, since 2 + 648 + 6 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2648669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18322 + ... + 18465.

2^2648664 is an apocalyptic number.

2648664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2648664 is an abundant number, since it is smaller than the sum of its proper divisors (4524996).

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

2648664 is a wasteful number, since it uses less digits than its factorization.

2648664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36799 (or 36792 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 2648664 is about 1627.4716587394. The cubic root of 2648664 is about 138.3594911906.

The spelling of 2648664 in words is "two million, six hundred forty-eight thousand, six hundred sixty-four".