87143827 has 2 divisors, whose sum is σ = 87143828. Its totient is φ = 87143826.

The previous prime is 87143809. The next prime is 87143831. The reversal of 87143827 is 72834178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87143827 - 2⁷ = 87143699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87143827.

It is not a weakly prime, because it can be changed into another prime (87143867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43571913 + 43571914.

It is an arithmetic number, because the mean of its divisors is an integer number (43571914).

Almost surely, 2^87143827 is an apocalyptic number.

87143827 is a deficient number, since it is larger than the sum of its proper divisors (1).

87143827 is an equidigital number, since it uses as much as digits as its factorization.

87143827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 40.

The square root of 87143827 is about 9335.0858057117. The cubic root of 87143827 is about 443.3488056233.

The spelling of 87143827 in words is "eighty-seven million, one hundred forty-three thousand, eight hundred twenty-seven".