81603060 has 192 divisors, whose sum is σ = 301916160. Its totient is φ = 15943680.

The previous prime is 81603037. The next prime is 81603061. The reversal of 81603060 is 6030618.

It is a self number, because there is not a number n which added to its sum of digits gives 81603060.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81603061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78021 + ... + 79059.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^81603060 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 81603060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150958080).

81603060 is an abundant number, since it is smaller than the sum of its proper divisors (220313100).

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

81603060 is a wasteful number, since it uses less digits than its factorization.

81603060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 81603060 is about 9033.4412047680. The cubic root of 81603060 is about 433.7459987395.

Adding to 81603060 its reverse (6030618), we get a palindrome (87633678).

The spelling of 81603060 in words is "eighty-one million, six hundred three thousand, sixty".