83609856 has 108 divisors (see below), whose sum is σ = 263062800. Its totient is φ = 25328640.

The previous prime is 83609849. The next prime is 83609881. The reversal of 83609856 is 65890638.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23695 + ... + 26993.

Almost surely, 2^83609856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83609856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131531400).

83609856 is an abundant number, since it is smaller than the sum of its proper divisors (179452944).

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

83609856 is a wasteful number, since it uses less digits than its factorization.

83609856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 83609856 is about 9143.8425183289. The cubic root of 83609856 is about 437.2728285653.

The spelling of 83609856 in words is "eighty-three million, six hundred nine thousand, eight hundred fifty-six".