80828686 has 4 divisors (see below), whose sum is σ = 121243032. Its totient is φ = 40414342.

The previous prime is 80828681. The next prime is 80828707. The reversal of 80828686 is 68682808.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80828681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20207170 + ... + 20207173.

It is an arithmetic number, because the mean of its divisors is an integer number (30310758).

Almost surely, 2^80828686 is an apocalyptic number.

80828686 is a deficient number, since it is larger than the sum of its proper divisors (40414346).

80828686 is a wasteful number, since it uses less digits than its factorization.

80828686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40414345.

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 80828686 is about 8990.4775179075. The cubic root of 80828686 is about 432.3696217879.

The spelling of 80828686 in words is "eighty million, eight hundred twenty-eight thousand, six hundred eighty-six".