83665684 has 6 divisors (see below), whose sum is σ = 146414954. Its totient is φ = 41832840.

The previous prime is 83665679. The next prime is 83665711. The reversal of 83665684 is 48656638.

It can be written as a sum of positive squares in only one way, i.e., 81504784 + 2160900 = 9028^2 + 1470^2 .

It is a super-3 number, since 3×83665684³ (a number of 25 digits) contains 333 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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10458207 + ... + 10458214.

Almost surely, 2^83665684 is an apocalyptic number.

It is an amenable number.

83665684 is a deficient number, since it is larger than the sum of its proper divisors (62749270).

83665684 is a wasteful number, since it uses less digits than its factorization.

83665684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20916425 (or 20916423 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 83665684 is about 9146.8947736377. The cubic root of 83665684 is about 437.3701322293.

The spelling of 83665684 in words is "eighty-three million, six hundred sixty-five thousand, six hundred eighty-four".