2660505623 has 2 divisors, whose sum is σ = 2660505624. Its totient is φ = 2660505622.

The previous prime is 2660505599. The next prime is 2660505637. The reversal of 2660505623 is 3265050662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2660505623 - 2¹² = 2660501527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660505643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330252811 + 1330252812.

It is an arithmetic number, because the mean of its divisors is an integer number (1330252812).

Almost surely, 2^2660505623 is an apocalyptic number.

2660505623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660505623 is an equidigital number, since it uses as much as digits as its factorization.

2660505623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 2660505623 is about 51580.0894047306. The cubic root of 2660505623 is about 1385.6537679055.

The spelling of 2660505623 in words is "two billion, six hundred sixty million, five hundred five thousand, six hundred twenty-three".