83686446 has 40 divisors (see below), whose sum is σ = 188832600. Its totient is φ = 27700272.

The previous prime is 83686423. The next prime is 83686457. The reversal of 83686446 is 64468638.

It is a super-2 number, since 2×83686446² = 14006842488221832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22405 + ... + 25871.

It is an arithmetic number, because the mean of its divisors is an integer number (4720815).

Almost surely, 2^83686446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83686446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94416300).

83686446 is an abundant number, since it is smaller than the sum of its proper divisors (105146154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83686446 is a wasteful number, since it uses less digits than its factorization.

83686446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630 (or 3621 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 83686446 is about 9148.0296239136. The cubic root of 83686446 is about 437.4063076647.

The spelling of 83686446 in words is "eighty-three million, six hundred eighty-six thousand, four hundred forty-six".