2636664 has 32 divisors (see below), whose sum is σ = 6703440. Its totient is φ = 864000.

The previous prime is 2636663. The next prime is 2636671. The reversal of 2636664 is 4666362.

2636664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (2636663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564 + ... + 2364.

2^2636664 is an apocalyptic number.

2636664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2636664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3351720).

2636664 is an abundant number, since it is smaller than the sum of its proper divisors (4066776).

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

2636664 is a wasteful number, since it uses less digits than its factorization.

2636664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871 (or 1867 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 2636664 is about 1623.7807733804. The cubic root of 2636664 is about 138.1502249816.

The spelling of 2636664 in words is "two million, six hundred thirty-six thousand, six hundred sixty-four".