8686942 has 8 divisors (see below), whose sum is σ = 14215032. Its totient is φ = 3948600.

The previous prime is 8686901. The next prime is 8686961. The reversal of 8686942 is 2496868.

It is a happy number.

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

It is a super-2 number, since 2×8686942² = 150925922622728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197409 + ... + 197452.

It is an arithmetic number, because the mean of its divisors is an integer number (1776879).

Almost surely, 2^8686942 is an apocalyptic number.

8686942 is a deficient number, since it is larger than the sum of its proper divisors (5528090).

8686942 is a wasteful number, since it uses less digits than its factorization.

8686942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394874.

The product of its digits is 165888, while the sum is 43.

The square root of 8686942 is about 2947.3618712333. The cubic root of 8686942 is about 205.5680615501.

It can be divided in two parts, 868 and 6942, that multiplied together give a triangular number (6025656 = T₃₄₇₁).

The spelling of 8686942 in words is "eight million, six hundred eighty-six thousand, nine hundred forty-two".