2620961 has 12 divisors (see below), whose sum is σ = 3088260. Its totient is φ = 2217600.

The previous prime is 2620951. The next prime is 2620967. The reversal of 2620961 is 1690262.

It can be written as a sum of positive squares in 2 ways, for example, as 1366561 + 1254400 = 1169^2 + 1120^2 .

It is not a de Polignac number, because 2620961 - 2⁶ = 2620897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2620961.

It is not an unprimeable number, because it can be changed into a prime (2620967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4061 + ... + 4661.

It is an arithmetic number, because the mean of its divisors is an integer number (257355).

2^2620961 is an apocalyptic number.

It is an amenable number.

2620961 is a deficient number, since it is larger than the sum of its proper divisors (467299).

2620961 is an equidigital number, since it uses as much as digits as its factorization.

2620961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2620961 is about 1618.9382322992. The cubic root of 2620961 is about 137.8754214228.

The spelling of 2620961 in words is "two million, six hundred twenty thousand, nine hundred sixty-one".