83980633 has 4 divisors (see below), whose sum is σ = 91615248. Its totient is φ = 76346020.

The previous prime is 83980621. The next prime is 83980649. The reversal of 83980633 is 33608938.

83980633 is nontrivially palindromic in base 6.

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 a de Polignac number, because none of the positive numbers 2^k-83980633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83980033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817291 + ... + 3817312.

It is an arithmetic number, because the mean of its divisors is an integer number (22903812).

Almost surely, 2^83980633 is an apocalyptic number.

It is an amenable number.

83980633 is a deficient number, since it is larger than the sum of its proper divisors (7634615).

83980633 is a wasteful number, since it uses less digits than its factorization.

83980633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634614.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 83980633 is about 9164.0947725348. The cubic root of 83980633 is about 437.9182534068.

The spelling of 83980633 in words is "eighty-three million, nine hundred eighty thousand, six hundred thirty-three".