83168945 has 4 divisors (see below), whose sum is σ = 99802740. Its totient is φ = 66535152.

The previous prime is 83168881. The next prime is 83168959. The reversal of 83168945 is 54986138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12222016 + 70946929 = 3496^2 + 8423^2 .

It is a cyclic number.

It is not a de Polignac number, because 83168945 - 2⁶ = 83168881 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83168896 and 83168905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8316890 + ... + 8316899.

It is an arithmetic number, because the mean of its divisors is an integer number (24950685).

Almost surely, 2^83168945 is an apocalyptic number.

It is an amenable number.

83168945 is a deficient number, since it is larger than the sum of its proper divisors (16633795).

83168945 is a wasteful number, since it uses less digits than its factorization.

83168945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16633794.

The product of its digits is 207360, while the sum is 44.

The square root of 83168945 is about 9119.7009271138. The cubic root of 83168945 is about 436.5028304299.

The spelling of 83168945 in words is "eighty-three million, one hundred sixty-eight thousand, nine hundred forty-five".