2669621 has 4 divisors (see below), whose sum is σ = 2679744. Its totient is φ = 2659500.

The previous prime is 2669603. The next prime is 2669659. The reversal of 2669621 is 1269662.

2669621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2669621 - 2¹⁴ = 2653237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2669321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4655 + ... + 5196.

It is an arithmetic number, because the mean of its divisors is an integer number (669936).

2^2669621 is an apocalyptic number.

It is an amenable number.

2669621 is a deficient number, since it is larger than the sum of its proper divisors (10123).

2669621 is an equidigital number, since it uses as much as digits as its factorization.

2669621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10122.

The product of its digits is 7776, while the sum is 32.

The square root of 2669621 is about 1633.8974876044. The cubic root of 2669621 is about 138.7234464783.

The spelling of 2669621 in words is "two million, six hundred sixty-nine thousand, six hundred twenty-one".