80849706 has 72 divisors (see below), whose sum is σ = 193763520. Its totient is φ = 22420944.

The previous prime is 80849701. The next prime is 80849707. The reversal of 80849706 is 60794808.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80849701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1023375 + ... + 1023453.

It is an arithmetic number, because the mean of its divisors is an integer number (2691160).

Almost surely, 2^80849706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80849706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96881760).

80849706 is an abundant number, since it is smaller than the sum of its proper divisors (112913814).

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

80849706 is a wasteful number, since it uses less digits than its factorization.

80849706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 80849706 is about 8991.6464565729. The cubic root of 80849706 is about 432.4070986713.

The spelling of 80849706 in words is "eighty million, eight hundred forty-nine thousand, seven hundred six".