83661104 has 20 divisors (see below), whose sum is σ = 170625240. Its totient is φ = 39628800.

The previous prime is 83661103. The next prime is 83661113. The reversal of 83661104 is 40116638.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (83661103) 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, 137297 + ... + 137904.

It is an arithmetic number, because the mean of its divisors is an integer number (8531262).

Almost surely, 2^83661104 is an apocalyptic number.

It is an amenable number.

83661104 is an abundant number, since it is smaller than the sum of its proper divisors (86964136).

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

83661104 is a wasteful number, since it uses less digits than its factorization.

83661104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275228 (or 275222 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 83661104 is about 9146.6444120235. The cubic root of 83661104 is about 437.3621512919.

The spelling of 83661104 in words is "eighty-three million, six hundred sixty-one thousand, one hundred four".