86671143 has 18 divisors (see below), whose sum is σ = 135564936. Its totient is φ = 53335152.

The previous prime is 86671139. The next prime is 86671147. The reversal of 86671143 is 34117668.

It is an interprime number because it is at equal distance from previous prime (86671139) and next prime (86671147).

It is not a de Polignac number, because 86671143 - 2² = 86671139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86671098 and 86671107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86671147) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26971 + ... + 30012.

Almost surely, 2^86671143 is an apocalyptic number.

86671143 is a deficient number, since it is larger than the sum of its proper divisors (48893793).

86671143 is a wasteful number, since it uses less digits than its factorization.

86671143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57015 (or 56999 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 86671143 is about 9309.7337770744. The cubic root of 86671143 is about 442.5457503209.

The spelling of 86671143 in words is "eighty-six million, six hundred seventy-one thousand, one hundred forty-three".