80671730 has 16 divisors (see below), whose sum is σ = 146648664. Its totient is φ = 31948800.

The previous prime is 80671727. The next prime is 80671751. The reversal of 80671730 is 3717608.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67848169 + 12823561 = 8237^2 + 3581^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38927 + ... + 40946.

Almost surely, 2^80671730 is an apocalyptic number.

80671730 is a deficient number, since it is larger than the sum of its proper divisors (65976934).

80671730 is a wasteful number, since it uses less digits than its factorization.

80671730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79981.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 80671730 is about 8981.7442626697. The cubic root of 80671730 is about 432.0895769036.

The spelling of 80671730 in words is "eighty million, six hundred seventy-one thousand, seven hundred thirty".