83879661 has 8 divisors (see below), whose sum is σ = 117725920. Its totient is φ = 52976592.

The previous prime is 83879659. The next prime is 83879669. The reversal of 83879661 is 16697838.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83879661 - 2¹ = 83879659 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83879661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83879669) 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, 735730 + ... + 735843.

It is an arithmetic number, because the mean of its divisors is an integer number (14715740).

Almost surely, 2^83879661 is an apocalyptic number.

It is an amenable number.

83879661 is a deficient number, since it is larger than the sum of its proper divisors (33846259).

83879661 is a wasteful number, since it uses less digits than its factorization.

83879661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471595.

The product of its digits is 435456, while the sum is 48.

The square root of 83879661 is about 9158.5840062752. The cubic root of 83879661 is about 437.7426763584.

The spelling of 83879661 in words is "eighty-three million, eight hundred seventy-nine thousand, six hundred sixty-one".