260691000697 has 4 divisors (see below), whose sum is σ = 260787092980. Its totient is φ = 260594908416.

The previous prime is 260691000641. The next prime is 260691000721. The reversal of 260691000697 is 796000196062.

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 125160995961 + 135530004736 = 353781^2 + 368144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260691000697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260691004697) 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 in 3 ways as a sum of consecutive naturals, for example, 48042072 + ... + 48047497.

It is an arithmetic number, because the mean of its divisors is an integer number (65196773245).

Almost surely, 2^260691000697 is an apocalyptic number.

It is an amenable number.

260691000697 is a deficient number, since it is larger than the sum of its proper divisors (96092283).

260691000697 is an equidigital number, since it uses as much as digits as its factorization.

260691000697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96092282.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 260691000697 in words is "two hundred sixty billion, six hundred ninety-one million, six hundred ninety-seven", and thus it is an aban number.