80671927 has 4 divisors (see below), whose sum is σ = 92196496. Its totient is φ = 69147360.

The previous prime is 80671909. The next prime is 80671931. The reversal of 80671927 is 72917608.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80671927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80671927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80671937) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5762274 + ... + 5762287.

It is an arithmetic number, because the mean of its divisors is an integer number (23049124).

Almost surely, 2^80671927 is an apocalyptic number.

80671927 is a deficient number, since it is larger than the sum of its proper divisors (11524569).

80671927 is a wasteful number, since it uses less digits than its factorization.

80671927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11524568.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 80671927 is about 8981.7552293524. The cubic root of 80671927 is about 432.0899286235.

The spelling of 80671927 in words is "eighty million, six hundred seventy-one thousand, nine hundred twenty-seven".