83668573 has 4 divisors (see below), whose sum is σ = 83822080. Its totient is φ = 83515068.

The previous prime is 83668561. The next prime is 83668579. The reversal of 83668573 is 37586638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37586638 = 2 ⋅18793319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83668573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83668579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75933 + ... + 77026.

It is an arithmetic number, because the mean of its divisors is an integer number (20955520).

Almost surely, 2^83668573 is an apocalyptic number.

It is an amenable number.

83668573 is a deficient number, since it is larger than the sum of its proper divisors (153507).

83668573 is a wasteful number, since it uses less digits than its factorization.

83668573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153506.

The product of its digits is 725760, while the sum is 46.

The square root of 83668573 is about 9147.0526947209. The cubic root of 83668573 is about 437.3751663433.

The spelling of 83668573 in words is "eighty-three million, six hundred sixty-eight thousand, five hundred seventy-three".