83781876 has 12 divisors (see below), whose sum is σ = 195491072. Its totient is φ = 27927288.

The previous prime is 83781851. The next prime is 83781877. The reversal of 83781876 is 67818738.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83781877) 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, 3490900 + ... + 3490923.

Almost surely, 2^83781876 is an apocalyptic number.

It is an amenable number.

83781876 is an abundant number, since it is smaller than the sum of its proper divisors (111709196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83781876 is a wasteful number, since it uses less digits than its factorization.

83781876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6981830 (or 6981828 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 83781876 is about 9153.2440151020. The cubic root of 83781876 is about 437.5725067311.

The spelling of 83781876 in words is "eighty-three million, seven hundred eighty-one thousand, eight hundred seventy-six".