2965621 has 4 divisors (see below), whose sum is σ = 3009952. Its totient is φ = 2921292.

The previous prime is 2965609. The next prime is 2965631. The reversal of 2965621 is 1265692.

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 2965621 - 2¹³ = 2957429 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 (2965601) 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, 22065 + ... + 22198.

It is an arithmetic number, because the mean of its divisors is an integer number (752488).

2^2965621 is an apocalyptic number.

2965621 is the 921-st centered heptagonal number.

It is an amenable number.

2965621 is a deficient number, since it is larger than the sum of its proper divisors (44331).

2965621 is an equidigital number, since it uses as much as digits as its factorization.

2965621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44330.

The product of its digits is 6480, while the sum is 31.

The square root of 2965621 is about 1722.0978485557. The cubic root of 2965621 is about 143.6719157528.

The spelling of 2965621 in words is "two million, nine hundred sixty-five thousand, six hundred twenty-one".