764070666 has 16 divisors (see below), whose sum is σ = 1529717184. Its totient is φ = 254427584.

The previous prime is 764070653. The next prime is 764070667. The reversal of 764070666 is 666070467.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (764070667) 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, 59310 + ... + 71033.

It is an arithmetic number, because the mean of its divisors is an integer number (95607324).

Almost surely, 2^764070666 is an apocalyptic number.

764070666 is an abundant number, since it is smaller than the sum of its proper divisors (765646518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

764070666 is a wasteful number, since it uses less digits than its factorization.

764070666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131325.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 764070666 is about 27641.8281956892. The cubic root of 764070666 is about 914.2069296394.

The spelling of 764070666 in words is "seven hundred sixty-four million, seventy thousand, six hundred sixty-six".