83561608 has 32 divisors (see below), whose sum is σ = 172854360. Its totient is φ = 37624320.

The previous prime is 83561603. The next prime is 83561617. The reversal of 83561608 is 80616538.

It can be written as a sum of positive squares in 4 ways, for example, as 30008484 + 53553124 = 5478^2 + 7318^2 .

It is not an unprimeable number, because it can be changed into a prime (83561603) 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, 5535 + ... + 14062.

Almost surely, 2^83561608 is an apocalyptic number.

It is an amenable number.

83561608 is an abundant number, since it is smaller than the sum of its proper divisors (89292752).

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

83561608 is a wasteful number, since it uses less digits than its factorization.

83561608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19657 (or 19653 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 83561608 is about 9141.2038594487. The cubic root of 83561608 is about 437.1887013266.

The spelling of 83561608 in words is "eighty-three million, five hundred sixty-one thousand, six hundred eight".