2604540997 has 2 divisors, whose sum is σ = 2604540998. Its totient is φ = 2604540996.

The previous prime is 2604540971. The next prime is 2604541001. The reversal of 2604540997 is 7990454062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1852355521 + 752185476 = 43039^2 + 27426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2604540997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2604540397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302270498 + 1302270499.

It is an arithmetic number, because the mean of its divisors is an integer number (1302270499).

Almost surely, 2^2604540997 is an apocalyptic number.

It is an amenable number.

2604540997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2604540997 is an equidigital number, since it uses as much as digits as its factorization.

2604540997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 2604540997 is about 51034.7038494395. The cubic root of 2604540997 is about 1375.8689378293.

The spelling of 2604540997 in words is "two billion, six hundred four million, five hundred forty thousand, nine hundred ninety-seven".