2636680 has 32 divisors (see below), whose sum is σ = 6139800. Its totient is φ = 1017856.

The previous prime is 2636677. The next prime is 2636701. The reversal of 2636680 is 866362.

It can be written as a sum of positive squares in 4 ways, for example, as 2502724 + 133956 = 1582^2 + 366^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24 + ... + 2296.

2^2636680 is an apocalyptic number.

2636680 is a gapful number since it is divisible by the number (20) 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 2636680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3069900).

2636680 is an abundant number, since it is smaller than the sum of its proper divisors (3503120).

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

2636680 is a wasteful number, since it uses less digits than its factorization.

2636680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313 (or 2309 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 2636680 is about 1623.7857001464. The cubic root of 2636680 is about 138.1505044255.

The spelling of 2636680 in words is "two million, six hundred thirty-six thousand, six hundred eighty".