1066240671 has 4 divisors (see below), whose sum is σ = 1421654232. Its totient is φ = 710827112.

The previous prime is 1066240657. The next prime is 1066240673. The reversal of 1066240671 is 1760426601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1066240671 - 2¹⁴ = 1066224287 is a prime.

It is a super-2 number, since 2×1066240671² = 2273738336989060482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066240673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177706776 + ... + 177706781.

It is an arithmetic number, because the mean of its divisors is an integer number (355413558).

Almost surely, 2^1066240671 is an apocalyptic number.

1066240671 is a deficient number, since it is larger than the sum of its proper divisors (355413561).

1066240671 is an equidigital number, since it uses as much as digits as its factorization.

1066240671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355413560.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1066240671 is about 32653.3408857348. The cubic root of 1066240671 is about 1021.6098732061.

The spelling of 1066240671 in words is "one billion, sixty-six million, two hundred forty thousand, six hundred seventy-one".