83666969 has 8 divisors (see below), whose sum is σ = 84382080. Its totient is φ = 82955376.

The previous prime is 83666959. The next prime is 83666981. The reversal of 83666969 is 96966638.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83666969 is a prime.

It is a super-2 number, since 2×83666969² = 14000323403293922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83666969.

It is not an unprimeable number, because it can be changed into a prime (83666959) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 67019 + ... + 68255.

It is an arithmetic number, because the mean of its divisors is an integer number (10547760).

Almost surely, 2^83666969 is an apocalyptic number.

It is an amenable number.

83666969 is a deficient number, since it is larger than the sum of its proper divisors (715111).

83666969 is a wasteful number, since it uses less digits than its factorization.

83666969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its digits is 2519424, while the sum is 53.

The square root of 83666969 is about 9146.9650157853. The cubic root of 83666969 is about 437.3723713701.

The spelling of 83666969 in words is "eighty-three million, six hundred sixty-six thousand, nine hundred sixty-nine".