8027687661 has 16 divisors (see below), whose sum is σ = 12294144000. Its totient is φ = 4564196208.

The previous prime is 8027687659. The next prime is 8027687669. The reversal of 8027687661 is 1667867208.

It is not a de Polignac number, because 8027687661 - 2¹ = 8027687659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8027687669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 956301 + ... + 964658.

It is an arithmetic number, because the mean of its divisors is an integer number (768384000).

Almost surely, 2^8027687661 is an apocalyptic number.

It is an amenable number.

8027687661 is a deficient number, since it is larger than the sum of its proper divisors (4266456339).

8027687661 is a wasteful number, since it uses less digits than its factorization.

8027687661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921168.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 8027687661 is about 89597.3641409166. The cubic root of 8027687661 is about 2002.3046483612.

The spelling of 8027687661 in words is "eight billion, twenty-seven million, six hundred eighty-seven thousand, six hundred sixty-one".