1066671679 has 4 divisors (see below), whose sum is σ = 1084750920. Its totient is φ = 1048592440.

The previous prime is 1066671581. The next prime is 1066671689. The reversal of 1066671679 is 9761766601.

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 1066671679 - 2²⁵ = 1033117247 is a prime.

It is a super-2 number, since 2×1066671679² = 2275576941561358082, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066671689) 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, 9039532 + ... + 9039649.

It is an arithmetic number, because the mean of its divisors is an integer number (271187730).

Almost surely, 2^1066671679 is an apocalyptic number.

1066671679 is a deficient number, since it is larger than the sum of its proper divisors (18079241).

1066671679 is an equidigital number, since it uses as much as digits as its factorization.

1066671679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18079240.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 1066671679 is about 32659.9399723882. The cubic root of 1066671679 is about 1021.7475102715.

The spelling of 1066671679 in words is "one billion, sixty-six million, six hundred seventy-one thousand, six hundred seventy-nine".