87126681 has 8 divisors (see below), whose sum is σ = 119002464. Its totient is φ = 56667680.

The previous prime is 87126667. The next prime is 87126713. The reversal of 87126681 is 18662178.

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

It is a cyclic number.

It is not a de Polignac number, because 87126681 - 2¹⁵ = 87093913 is a prime.

It is a super-2 number, since 2×87126681² = 15182117084151522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87126631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354051 + ... + 354296.

It is an arithmetic number, because the mean of its divisors is an integer number (14875308).

Almost surely, 2^87126681 is an apocalyptic number.

It is an amenable number.

87126681 is a deficient number, since it is larger than the sum of its proper divisors (31875783).

87126681 is a wasteful number, since it uses less digits than its factorization.

87126681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708391.

The product of its digits is 32256, while the sum is 39.

The square root of 87126681 is about 9334.1673972562. The cubic root of 87126681 is about 443.3197266570.

The spelling of 87126681 in words is "eighty-seven million, one hundred twenty-six thousand, six hundred eighty-one".