2604731 has 2 divisors, whose sum is σ = 2604732. Its totient is φ = 2604730.

The previous prime is 2604703. The next prime is 2604733. The reversal of 2604731 is 1374062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2604731 - 2¹⁴ = 2588347 is a prime.

It is a super-2 number, since 2×2604731² = 13569247164722, which contains 22 as substring.

Together with 2604733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2604697 and 2604706.

It is not a weakly prime, because it can be changed into another prime (2604733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302365 + 1302366.

It is an arithmetic number, because the mean of its divisors is an integer number (1302366).

2^2604731 is an apocalyptic number.

2604731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2604731 is an equidigital number, since it uses as much as digits as its factorization.

2604731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 2604731 is about 1613.9179037361. The cubic root of 2604731 is about 137.5902393867.

Adding to 2604731 its reverse (1374062), we get a palindrome (3978793).

The spelling of 2604731 in words is "two million, six hundred four thousand, seven hundred thirty-one".