1066669800 has 96 divisors (see below), whose sum is σ = 3779073600. Its totient is φ = 243809280.

The previous prime is 1066669789. The next prime is 1066669801. The reversal of 1066669800 is 89666601.

It is a super-2 number, since 2×1066669800² = 2275568924464080000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1066669801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122785 + ... + 131184.

It is an arithmetic number, because the mean of its divisors is an integer number (39365350).

Almost surely, 2^1066669800 is an apocalyptic number.

1066669800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066669800 is an abundant number, since it is smaller than the sum of its proper divisors (2712403800).

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

1066669800 is a wasteful number, since it uses less digits than its factorization.

1066669800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253995 (or 253986 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1066669800 is about 32659.9112062479. The cubic root of 1066669800 is about 1021.7469103166.

The spelling of 1066669800 in words is "one billion, sixty-six million, six hundred sixty-nine thousand, eight hundred".