1066645370 has 32 divisors (see below), whose sum is σ = 2309731200. Its totient is φ = 346458816.

The previous prime is 1066645369. The next prime is 1066645379. The reversal of 1066645370 is 735466601.

It is a happy number.

It is a super-2 number, since 2×1066645370² = 2275464690684873800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1066645379) 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, 399665 + ... + 402324.

It is an arithmetic number, because the mean of its divisors is an integer number (72179100).

Almost surely, 2^1066645370 is an apocalyptic number.

1066645370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066645370 is an abundant number, since it is smaller than the sum of its proper divisors (1243085830).

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

1066645370 is a wasteful number, since it uses less digits than its factorization.

1066645370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802022.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 1066645370 is about 32659.5371981907. The cubic root of 1066645370 is about 1021.7391098809.

The spelling of 1066645370 in words is "one billion, sixty-six million, six hundred forty-five thousand, three hundred seventy".