2604531623 has 2 divisors, whose sum is σ = 2604531624. Its totient is φ = 2604531622.

The previous prime is 2604531613. The next prime is 2604531659. The reversal of 2604531623 is 3261354062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2604531623 - 2⁴ = 2604531607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2604531623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2604531613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302265811 + 1302265812.

It is an arithmetic number, because the mean of its divisors is an integer number (1302265812).

Almost surely, 2^2604531623 is an apocalyptic number.

2604531623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2604531623 is an equidigital number, since it uses as much as digits as its factorization.

2604531623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2604531623 is about 51034.6120098899. The cubic root of 2604531623 is about 1375.8672871980.

Adding to 2604531623 its reverse (3261354062), we get a palindrome (5865885685).

The spelling of 2604531623 in words is "two billion, six hundred four million, five hundred thirty-one thousand, six hundred twenty-three".