2636780 has 12 divisors (see below), whose sum is σ = 5537280. Its totient is φ = 1054704.

The previous prime is 2636779. The next prime is 2636791. The reversal of 2636780 is 876362.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 2⁵ + 6² + 3¹² + 6⁵ + 7³ + 8⁷ + 0 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65900 + ... + 65939.

It is an arithmetic number, because the mean of its divisors is an integer number (461440).

2^2636780 is an apocalyptic number.

2636780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2636780 is an abundant number, since it is smaller than the sum of its proper divisors (2900500).

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

2636780 is a wasteful number, since it uses less digits than its factorization.

2636780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131848 (or 131846 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 2636780 is about 1623.8164920951. The cubic root of 2636780 is about 138.1522509243.

The spelling of 2636780 in words is "two million, six hundred thirty-six thousand, seven hundred eighty".