80021707 has 8 divisors (see below), whose sum is σ = 81239040. Its totient is φ = 78809640.

The previous prime is 80021687. The next prime is 80021803. The reversal of 80021707 is 70712008.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80021707 - 2²³ = 71633099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80021107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37758 + ... + 39820.

It is an arithmetic number, because the mean of its divisors is an integer number (10154880).

Almost surely, 2^80021707 is an apocalyptic number.

80021707 is a deficient number, since it is larger than the sum of its proper divisors (1217333).

80021707 is a wasteful number, since it uses less digits than its factorization.

80021707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 80021707 is about 8945.4852858858. The cubic root of 80021707 is about 430.9259064102.

The spelling of 80021707 in words is "eighty million, twenty-one thousand, seven hundred seven".