1066645500 has 48 divisors (see below), whose sum is σ = 3106076064. Its totient is φ = 284438400.

The previous prime is 1066645477. The next prime is 1066645507. The reversal of 1066645500 is 55466601.

It is a super-2 number, since 2×1066645500² = 2275465245340500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066645507) 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, 354049 + ... + 357048.

It is an arithmetic number, because the mean of its divisors is an integer number (64709918).

Almost surely, 2^1066645500 is an apocalyptic number.

1066645500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066645500 is an abundant number, since it is smaller than the sum of its proper divisors (2039430564).

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

1066645500 is a wasteful number, since it uses less digits than its factorization.

1066645500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711119 (or 711107 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1066645500 is about 32659.5391884209. The cubic root of 1066645500 is about 1021.7391513899.

The spelling of 1066645500 in words is "one billion, sixty-six million, six hundred forty-five thousand, five hundred".