83504173 has 8 divisors (see below), whose sum is σ = 86318336. Its totient is φ = 80781660.

The previous prime is 83504149. The next prime is 83504207. The reversal of 83504173 is 37140538.

It is not a de Polignac number, because 83504173 - 2²¹ = 81407021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83574173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28390 + ... + 31192.

It is an arithmetic number, because the mean of its divisors is an integer number (10789792).

Almost surely, 2^83504173 is an apocalyptic number.

It is an amenable number.

83504173 is a deficient number, since it is larger than the sum of its proper divisors (2814163).

83504173 is an frugal number, since it uses more digits than its factorization.

83504173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 83504173 is about 9138.0617747967. The cubic root of 83504173 is about 437.0885130191.

Subtracting from 83504173 its reverse (37140538), we obtain a triangular number (46363635 = T₉₆₂₉).

The spelling of 83504173 in words is "eighty-three million, five hundred four thousand, one hundred seventy-three".