1066707807 has 12 divisors (see below), whose sum is σ = 1563329880. Its totient is φ = 646489360.

The previous prime is 1066707781. The next prime is 1066707821. The reversal of 1066707807 is 7087076601.

It is not a de Polignac number, because 1066707807 - 2⁷ = 1066707679 is a prime.

It is a super-2 number, since 2×1066707807² = 2275731091029498498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066707307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1468932 + ... + 1469657.

It is an arithmetic number, because the mean of its divisors is an integer number (130277490).

Almost surely, 2^1066707807 is an apocalyptic number.

1066707807 is a deficient number, since it is larger than the sum of its proper divisors (496622073).

1066707807 is a wasteful number, since it uses less digits than its factorization.

1066707807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938614 (or 2938603 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 1066707807 is about 32660.4930611894. The cubic root of 1066707807 is about 1021.7590456165.

The spelling of 1066707807 in words is "one billion, sixty-six million, seven hundred seven thousand, eight hundred seven".