83886644 has 6 divisors (see below), whose sum is σ = 146801634. Its totient is φ = 41943320.

The previous prime is 83886643. The next prime is 83886701. The reversal of 83886644 is 44668838.

It can be written as a sum of positive squares in only one way, i.e., 59876644 + 24010000 = 7738^2 + 4900^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83886643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10485827 + ... + 10485834.

It is an arithmetic number, because the mean of its divisors is an integer number (24466939).

Almost surely, 2^83886644 is an apocalyptic number.

It is an amenable number.

83886644 is a deficient number, since it is larger than the sum of its proper divisors (62914990).

83886644 is a wasteful number, since it uses less digits than its factorization.

83886644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20971665 (or 20971663 counting only the distinct ones).

The product of its digits is 884736, while the sum is 47.

The square root of 83886644 is about 9158.9652253953. The cubic root of 83886644 is about 437.7548234123.

The spelling of 83886644 in words is "eighty-three million, eight hundred eighty-six thousand, six hundred forty-four".