83619973 has 4 divisors (see below), whose sum is σ = 87255648. Its totient is φ = 79984300.

The previous prime is 83619971. The next prime is 83620001. The reversal of 83619973 is 37991638.

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.

It is a cyclic number.

It is not a de Polignac number, because 83619973 - 2¹ = 83619971 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 (83619971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817803 + ... + 1817848.

It is an arithmetic number, because the mean of its divisors is an integer number (21813912).

Almost surely, 2^83619973 is an apocalyptic number.

It is an amenable number.

83619973 is a deficient number, since it is larger than the sum of its proper divisors (3635675).

83619973 is a wasteful number, since it uses less digits than its factorization.

83619973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635674.

The product of its digits is 244944, while the sum is 46.

The square root of 83619973 is about 9144.3957154095. The cubic root of 83619973 is about 437.2904648863.

The spelling of 83619973 in words is "eighty-three million, six hundred nineteen thousand, nine hundred seventy-three".