8256746661 has 8 divisors (see below), whose sum is σ = 11011702944. Its totient is φ = 5503144080.

The previous prime is 8256746633. The next prime is 8256746689. The reversal of 8256746661 is 1666476528.

It is an interprime number because it is at equal distance from previous prime (8256746633) and next prime (8256746689).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8256746661 - 2¹⁴ = 8256730277 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8256746161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324106 + ... + 348651.

It is an arithmetic number, because the mean of its divisors is an integer number (1376462868).

Almost surely, 2^8256746661 is an apocalyptic number.

It is an amenable number.

8256746661 is a deficient number, since it is larger than the sum of its proper divisors (2754956283).

8256746661 is a wasteful number, since it uses less digits than its factorization.

8256746661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676851.

The product of its digits is 2903040, while the sum is 51.

The square root of 8256746661 is about 90866.6421796250. The cubic root of 8256746661 is about 2021.1706658185.

The spelling of 8256746661 in words is "eight billion, two hundred fifty-six million, seven hundred forty-six thousand, six hundred sixty-one".