1066321770 has 32 divisors (see below), whose sum is σ = 2709713088. Its totient is φ = 267625728.

The previous prime is 1066321769. The next prime is 1066321771. The reversal of 1066321770 is 771236601.

It is an interprime number because it is at equal distance from previous prime (1066321769) and next prime (1066321771).

It is a super-2 number, since 2×1066321770² = 2274084234351865800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066321771) 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 15 ways as a sum of consecutive naturals, for example, 1044904 + ... + 1045923.

It is an arithmetic number, because the mean of its divisors is an integer number (84678534).

Almost surely, 2^1066321770 is an apocalyptic number.

1066321770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066321770 is an abundant number, since it is smaller than the sum of its proper divisors (1643391318).

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

1066321770 is a wasteful number, since it uses less digits than its factorization.

1066321770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090854.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 1066321770 is about 32654.5826799241. The cubic root of 1066321770 is about 1021.6357739997.

The spelling of 1066321770 in words is "one billion, sixty-six million, three hundred twenty-one thousand, seven hundred seventy".