80723147 has 4 divisors (see below), whose sum is σ = 80786496. Its totient is φ = 80659800.

The previous prime is 80723131. The next prime is 80723161. The reversal of 80723147 is 74132708.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 80723147 - 2⁴ = 80723131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80723177) 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, 29723 + ... + 32324.

It is an arithmetic number, because the mean of its divisors is an integer number (20196624).

Almost surely, 2^80723147 is an apocalyptic number.

80723147 is a deficient number, since it is larger than the sum of its proper divisors (63349).

80723147 is a wasteful number, since it uses less digits than its factorization.

80723147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63348.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 80723147 is about 8984.6061126796. The cubic root of 80723147 is about 432.1813563965.

The spelling of 80723147 in words is "eighty million, seven hundred twenty-three thousand, one hundred forty-seven".