80688650 has 24 divisors (see below), whose sum is σ = 171521760. Its totient is φ = 27664560.

The previous prime is 80688617. The next prime is 80688653. The reversal of 80688650 is 5688608.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80688598 and 80688607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80688653) 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 11 ways as a sum of consecutive naturals, for example, 114920 + ... + 115619.

It is an arithmetic number, because the mean of its divisors is an integer number (7146740).

Almost surely, 2^80688650 is an apocalyptic number.

80688650 is an abundant number, since it is smaller than the sum of its proper divisors (90833110).

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

80688650 is a wasteful number, since it uses less digits than its factorization.

80688650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230558 (or 230553 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 80688650 is about 8982.6861238719. The cubic root of 80688650 is about 432.1197834562.

The spelling of 80688650 in words is "eighty million, six hundred eighty-eight thousand, six hundred fifty".