2660526061 has 4 divisors (see below), whose sum is σ = 2817027612. Its totient is φ = 2504024512.

The previous prime is 2660526047. The next prime is 2660526067. The reversal of 2660526061 is 1606250662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1924489161 + 736036900 = 43869^2 + 27130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660526061 - 2¹⁵ = 2660493293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660526067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78250750 + ... + 78250783.

It is an arithmetic number, because the mean of its divisors is an integer number (704256903).

Almost surely, 2^2660526061 is an apocalyptic number.

It is an amenable number.

2660526061 is a deficient number, since it is larger than the sum of its proper divisors (156501551).

2660526061 is a wasteful number, since it uses less digits than its factorization.

2660526061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156501550.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2660526061 is about 51580.2875234328. The cubic root of 2660526061 is about 1385.6573160931.

The spelling of 2660526061 in words is "two billion, six hundred sixty million, five hundred twenty-six thousand, sixty-one".