2616321 has 4 divisors (see below), whose sum is σ = 3488432. Its totient is φ = 1744212.

The previous prime is 2616287. The next prime is 2616331. The reversal of 2616321 is 1236162.

It is a happy number.

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 not a de Polignac number, because 2616321 - 2⁷ = 2616193 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2616331) 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, 436051 + ... + 436056.

It is an arithmetic number, because the mean of its divisors is an integer number (872108).

2^2616321 is an apocalyptic number.

It is an amenable number.

2616321 is a deficient number, since it is larger than the sum of its proper divisors (872111).

2616321 is an equidigital number, since it uses as much as digits as its factorization.

2616321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872110.

The product of its digits is 432, while the sum is 21.

The square root of 2616321 is about 1617.5045594990. The cubic root of 2616321 is about 137.7940110994.

The spelling of 2616321 in words is "two million, six hundred sixteen thousand, three hundred twenty-one".