2621160 has 80 divisors (see below), whose sum is σ = 8820900. Its totient is φ = 698112.

The previous prime is 2621159. The next prime is 2621167. The reversal of 2621160 is 611262.

It is a happy number.

It is a Cunningham number, because it is equal to 1619²-1.

It can be written as a sum of positive squares in 2 ways, for example, as 2566404 + 54756 = 1602^2 + 234^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621167) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2836 + ... + 3644.

2^2621160 is an apocalyptic number.

2621160 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 2621160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4410450).

2621160 is an abundant number, since it is smaller than the sum of its proper divisors (6199740).

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

2621160 is a wasteful number, since it uses less digits than its factorization.

2621160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2621160 is about 1618.9996911674. Note that the first 3 decimals coincide. The cubic root of 2621160 is about 137.8789107936.

The spelling of 2621160 in words is "two million, six hundred twenty-one thousand, one hundred sixty".