1066640001 has 8 divisors (see below), whose sum is σ = 1625356224. Its totient is φ = 609508560.

The previous prime is 1066639967. The next prime is 1066640009. The reversal of 1066640001 is 1000466601.

1066640001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1066640001 - 2⁹ = 1066639489 is a prime.

It is a super-2 number, since 2×1066640001² = 2275441783466560002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066640009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25396170 + ... + 25396211.

It is an arithmetic number, because the mean of its divisors is an integer number (203169528).

Almost surely, 2^1066640001 is an apocalyptic number.

It is an amenable number.

1066640001 is a deficient number, since it is larger than the sum of its proper divisors (558716223).

1066640001 is an equidigital number, since it uses as much as digits as its factorization.

1066640001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50792391.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1066640001 is about 32659.4550015765. The cubic root of 1066640001 is about 1021.7373955572.

The spelling of 1066640001 in words is "one billion, sixty-six million, six hundred forty thousand, one".