83427885 has 24 divisors (see below), whose sum is σ = 144871584. Its totient is φ = 44413920.

The previous prime is 83427881. The next prime is 83427889. The reversal of 83427885 is 58872438.

It is an interprime number because it is at equal distance from previous prime (83427881) and next prime (83427889).

It is not a de Polignac number, because 83427885 - 2² = 83427881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 83427885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83427881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29754 + ... + 32436.

It is an arithmetic number, because the mean of its divisors is an integer number (6036316).

Almost surely, 2^83427885 is an apocalyptic number.

It is an amenable number.

83427885 is a deficient number, since it is larger than the sum of its proper divisors (61443699).

83427885 is a wasteful number, since it uses less digits than its factorization.

83427885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385 (or 3382 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 83427885 is about 9133.8866316591. The cubic root of 83427885 is about 436.9553669067.

The spelling of 83427885 in words is "eighty-three million, four hundred twenty-seven thousand, eight hundred eighty-five".