2620361 has 4 divisors (see below), whose sum is σ = 2634132. Its totient is φ = 2606592.

The previous prime is 2620339. The next prime is 2620369. The reversal of 2620361 is 1630262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1729225 + 891136 = 1315^2 + 944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2620361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2620369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6596 + ... + 6981.

It is an arithmetic number, because the mean of its divisors is an integer number (658533).

2^2620361 is an apocalyptic number.

It is an amenable number.

2620361 is a deficient number, since it is larger than the sum of its proper divisors (13771).

2620361 is a wasteful number, since it uses less digits than its factorization.

2620361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13770.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2620361 is about 1618.7529150553. The cubic root of 2620361 is about 137.8648996376.

Subtracting from 2620361 its reverse (1630262), we obtain a palindrome (990099).

The spelling of 2620361 in words is "two million, six hundred twenty thousand, three hundred sixty-one".