86743887 has 4 divisors (see below), whose sum is σ = 115658520. Its totient is φ = 57829256.

The previous prime is 86743871. The next prime is 86743897. The reversal of 86743887 is 78834768.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86743887 - 2⁴ = 86743871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86743837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14457312 + ... + 14457317.

It is an arithmetic number, because the mean of its divisors is an integer number (28914630).

Almost surely, 2^86743887 is an apocalyptic number.

86743887 is a deficient number, since it is larger than the sum of its proper divisors (28914633).

86743887 is a wasteful number, since it uses less digits than its factorization.

86743887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28914632.

The product of its digits is 1806336, while the sum is 51.

The square root of 86743887 is about 9313.6398362831. The cubic root of 86743887 is about 442.6695267961.

It can be divided in two parts, 8674 and 3887, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 86743887 in words is "eighty-six million, seven hundred forty-three thousand, eight hundred eighty-seven".