2621885 has 16 divisors (see below), whose sum is σ = 3753216. Its totient is φ = 1719168.

The previous prime is 2621881. The next prime is 2621897. The reversal of 2621885 is 5881262.

It is a cyclic number.

It is not a de Polignac number, because 2621885 - 2² = 2621881 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 (2621881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824 + ... + 2433.

It is an arithmetic number, because the mean of its divisors is an integer number (234576).

2^2621885 is an apocalyptic number.

It is an amenable number.

2621885 is a deficient number, since it is larger than the sum of its proper divisors (1131331).

2621885 is a wasteful number, since it uses less digits than its factorization.

2621885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292.

The product of its digits is 7680, while the sum is 32.

The square root of 2621885 is about 1619.2235793738. The cubic root of 2621885 is about 137.8916218319.

The spelling of 2621885 in words is "two million, six hundred twenty-one thousand, eight hundred eighty-five".