2473621 has 4 divisors (see below), whose sum is σ = 2478112. Its totient is φ = 2469132.

The previous prime is 2473609. The next prime is 2473631. The reversal of 2473621 is 1263742.

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 2473621 - 2⁵ = 2473589 is a prime.

It is a super-2 number, since 2×2473621² = 12237601703282, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2473631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281 + ... + 2566.

It is an arithmetic number, because the mean of its divisors is an integer number (619528).

2^2473621 is an apocalyptic number.

It is an amenable number.

2473621 is a deficient number, since it is larger than the sum of its proper divisors (4491).

2473621 is an equidigital number, since it uses as much as digits as its factorization.

2473621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490.

The product of its digits is 2016, while the sum is 25.

The square root of 2473621 is about 1572.7749362194. The cubic root of 2473621 is about 135.2418344741.

The spelling of 2473621 in words is "two million, four hundred seventy-three thousand, six hundred twenty-one".