83674639 has 4 divisors (see below), whose sum is σ = 83780424. Its totient is φ = 83568856.

The previous prime is 83674637. The next prime is 83674681. The reversal of 83674639 is 93647638.

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

It is a cyclic number.

It is not a de Polignac number, because 83674639 - 2¹ = 83674637 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 (83674631) 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, 51697 + ... + 53290.

It is an arithmetic number, because the mean of its divisors is an integer number (20945106).

Almost surely, 2^83674639 is an apocalyptic number.

83674639 is a deficient number, since it is larger than the sum of its proper divisors (105785).

83674639 is a wasteful number, since it uses less digits than its factorization.

83674639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105784.

The product of its digits is 653184, while the sum is 46.

The square root of 83674639 is about 9147.3842709269. The cubic root of 83674639 is about 437.3857360373.

The spelling of 83674639 in words is "eighty-three million, six hundred seventy-four thousand, six hundred thirty-nine".