2664636 has 96 divisors (see below), whose sum is σ = 7526400. Its totient is φ = 725760.

The previous prime is 2664601. The next prime is 2664643. The reversal of 2664636 is 6364662.

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

It is a junction number, because it is equal to n+sod(n) for n = 2664597 and 2664606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85941 + ... + 85971.

It is an arithmetic number, because the mean of its divisors is an integer number (78400).

2^2664636 is an apocalyptic number.

2664636 is a gapful number since it is divisible by the number (26) 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 2664636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3763200).

2664636 is an abundant number, since it is smaller than the sum of its proper divisors (4861764).

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

2664636 is a wasteful number, since it uses less digits than its factorization.

2664636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 97 counting only the distinct ones).

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

The square root of 2664636 is about 1632.3712812960. The cubic root of 2664636 is about 138.6370462908.

The spelling of 2664636 in words is "two million, six hundred sixty-four thousand, six hundred thirty-six".