2664621 has 12 divisors (see below), whose sum is σ = 3886272. Its totient is φ = 1759176.

The previous prime is 2664601. The next prime is 2664643. The reversal of 2664621 is 1264662.

It is a happy number.

It is not a de Polignac number, because 2664621 - 2⁵ = 2664589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421 + ... + 2346.

It is an arithmetic number, because the mean of its divisors is an integer number (323856).

2^2664621 is an apocalyptic number.

It is an amenable number.

2664621 is a deficient number, since it is larger than the sum of its proper divisors (1221651).

2664621 is a wasteful number, since it uses less digits than its factorization.

2664621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880 (or 2877 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 2664621 is about 1632.3666867466. The cubic root of 2664621 is about 138.6367861478.

The spelling of 2664621 in words is "two million, six hundred sixty-four thousand, six hundred twenty-one".