1066669879 has 16 divisors (see below), whose sum is σ = 1237662720. Its totient is φ = 908530560.

The previous prime is 1066669853. The next prime is 1066669907. The reversal of 1066669879 is 9789666601.

It is a cyclic number.

It is not a de Polignac number, because 1066669879 - 2⁵ = 1066669847 is a prime.

It is a super-2 number, since 2×1066669879² = 2275569261531749282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066669579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28912 + ... + 54490.

It is an arithmetic number, because the mean of its divisors is an integer number (77353920).

Almost surely, 2^1066669879 is an apocalyptic number.

1066669879 is a deficient number, since it is larger than the sum of its proper divisors (170992841).

1066669879 is a wasteful number, since it uses less digits than its factorization.

1066669879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25830.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The square root of 1066669879 is about 32659.9124156817. The cubic root of 1066669879 is about 1021.7469355409.

The spelling of 1066669879 in words is "one billion, sixty-six million, six hundred sixty-nine thousand, eight hundred seventy-nine".