80868606 has 64 divisors (see below), whose sum is σ = 204492288. Its totient is φ = 20746368.

The previous prime is 80868589. The next prime is 80868611. The reversal of 80868606 is 60686808.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18201 + ... + 22203.

It is an arithmetic number, because the mean of its divisors is an integer number (3195192).

Almost surely, 2^80868606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80868606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102246144).

80868606 is an abundant number, since it is smaller than the sum of its proper divisors (123623682).

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

80868606 is a wasteful number, since it uses less digits than its factorization.

80868606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 80868606 is about 8992.6973706447. The cubic root of 80868606 is about 432.4407902283.

The spelling of 80868606 in words is "eighty million, eight hundred sixty-eight thousand, six hundred six".