83784673 has 4 divisors (see below), whose sum is σ = 95753920. Its totient is φ = 71815428.

The previous prime is 83784667. The next prime is 83784713. The reversal of 83784673 is 37648738.

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: 37648738 = 2 ⋅18824369.

It is a cyclic number.

It is not a de Polignac number, because 83784673 - 2¹³ = 83776481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83787673) 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, 5984613 + ... + 5984626.

It is an arithmetic number, because the mean of its divisors is an integer number (23938480).

Almost surely, 2^83784673 is an apocalyptic number.

It is an amenable number.

83784673 is a deficient number, since it is larger than the sum of its proper divisors (11969247).

83784673 is a wasteful number, since it uses less digits than its factorization.

83784673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969246.

The product of its digits is 677376, while the sum is 46.

The square root of 83784673 is about 9153.3968011881. The cubic root of 83784673 is about 437.5773760288.

The spelling of 83784673 in words is "eighty-three million, seven hundred eighty-four thousand, six hundred seventy-three".