83601644 has 36 divisors (see below), whose sum is σ = 172549944. Its totient is φ = 35332416.

The previous prime is 83601641. The next prime is 83601697. The reversal of 83601644 is 44610638.

It is a self number, because there is not a number n which added to its sum of digits gives 83601644.

It is not an unprimeable number, because it can be changed into a prime (83601641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11387 + ... + 17229.

It is an arithmetic number, because the mean of its divisors is an integer number (4793054).

Almost surely, 2^83601644 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 83601644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86274972).

83601644 is an abundant number, since it is smaller than the sum of its proper divisors (88948300).

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

83601644 is a wasteful number, since it uses less digits than its factorization.

83601644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5934 (or 5925 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 83601644 is about 9143.3934619484. The cubic root of 83601644 is about 437.2585120632.

The spelling of 83601644 in words is "eighty-three million, six hundred one thousand, six hundred forty-four".