80669716 has 12 divisors (see below), whose sum is σ = 141672832. Its totient is φ = 40191768.

The previous prime is 80669713. The next prime is 80669741. The reversal of 80669716 is 61796608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80669711) 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 3 ways as a sum of consecutive naturals, for example, 34500 + ... + 36763.

Almost surely, 2^80669716 is an apocalyptic number.

It is an amenable number.

80669716 is a deficient number, since it is larger than the sum of its proper divisors (61003116).

80669716 is a wasteful number, since it uses less digits than its factorization.

80669716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71550 (or 71548 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 80669716 is about 8981.6321456626. The cubic root of 80669716 is about 432.0859811142.

The spelling of 80669716 in words is "eighty million, six hundred sixty-nine thousand, seven hundred sixteen".