2621393 has 4 divisors (see below), whose sum is σ = 2646000. Its totient is φ = 2596788.

The previous prime is 2621387. The next prime is 2621431. The reversal of 2621393 is 3931262.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3931262 = 2 ⋅1965631.

It is a cyclic number.

It is not a de Polignac number, because 2621393 - 2⁸ = 2621137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2621303) 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, 12143 + ... + 12356.

It is an arithmetic number, because the mean of its divisors is an integer number (661500).

2^2621393 is an apocalyptic number.

It is an amenable number.

2621393 is a deficient number, since it is larger than the sum of its proper divisors (24607).

2621393 is a wasteful number, since it uses less digits than its factorization.

2621393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24606.

The product of its digits is 1944, while the sum is 26.

The square root of 2621393 is about 1619.0716475808. The cubic root of 2621393 is about 137.8829961139.

The spelling of 2621393 in words is "two million, six hundred twenty-one thousand, three hundred ninety-three".