2621764 has 12 divisors (see below), whose sum is σ = 4605804. Its totient is φ = 1305824.

The previous prime is 2621761. The next prime is 2621767. The reversal of 2621764 is 4671262.

It is an interprime number because it is at equal distance from previous prime (2621761) and next prime (2621767).

It can be written as a sum of positive squares in 2 ways, for example, as 2310400 + 311364 = 1520^2 + 558^2 .

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 2²¹ + 1 + 7 + 6³ + 4³ .

It is not an unprimeable number, because it can be changed into a prime (2621761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54 + ... + 2290.

It is an arithmetic number, because the mean of its divisors is an integer number (383817).

2^2621764 is an apocalyptic number.

It is an amenable number.

2621764 is a deficient number, since it is larger than the sum of its proper divisors (1984040).

2621764 is a wasteful number, since it uses less digits than its factorization.

2621764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534 (or 2532 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 2621764 is about 1619.1862153563. The cubic root of 2621764 is about 137.8895005664.

The spelling of 2621764 in words is "two million, six hundred twenty-one thousand, seven hundred sixty-four".