87855671 has 2 divisors, whose sum is σ = 87855672. Its totient is φ = 87855670.

The previous prime is 87855641. The next prime is 87855689. The reversal of 87855671 is 17655878.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87855671 - 2¹⁰ = 87854647 is a prime.

It is a super-3 number, since 3×87855671³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87855631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43927835 + 43927836.

It is an arithmetic number, because the mean of its divisors is an integer number (43927836).

Almost surely, 2^87855671 is an apocalyptic number.

87855671 is a deficient number, since it is larger than the sum of its proper divisors (1).

87855671 is an equidigital number, since it uses as much as digits as its factorization.

87855671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 47.

The square root of 87855671 is about 9373.1356012809. The cubic root of 87855671 is about 444.5527147311.

The spelling of 87855671 in words is "eighty-seven million, eight hundred fifty-five thousand, six hundred seventy-one".