80640001 has 16 divisors (see below), whose sum is σ = 91034496. Its totient is φ = 70874496.

The previous prime is 80639969. The next prime is 80640011. The reversal of 80640001 is 10004608.

It is a cyclic number.

It is not a de Polignac number, because 80640001 - 2⁵ = 80639969 is a prime.

It is a super-2 number, since 2×80640001² = 13005619522560002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80640011) 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 15 ways as a sum of consecutive naturals, for example, 84141 + ... + 85093.

It is an arithmetic number, because the mean of its divisors is an integer number (5689656).

Almost surely, 2^80640001 is an apocalyptic number.

It is an amenable number.

80640001 is a deficient number, since it is larger than the sum of its proper divisors (10394495).

80640001 is a wasteful number, since it uses less digits than its factorization.

80640001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 80640001 is about 8979.9777839369. The cubic root of 80640001 is about 432.0329210880.

Adding to 80640001 its reverse (10004608), we get a palindrome (90644609).

The spelling of 80640001 in words is "eighty million, six hundred forty thousand, one".