1066157860 has 12 divisors (see below), whose sum is σ = 2238931548. Its totient is φ = 426463136.

The previous prime is 1066157843. The next prime is 1066157861. The reversal of 1066157860 is 687516601.

1066157860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 827022564 + 239135296 = 28758^2 + 15464^2 .

It is a super-2 number, since 2×1066157860² = 2273385164879559200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066157861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26653927 + ... + 26653966.

It is an arithmetic number, because the mean of its divisors is an integer number (186577629).

Almost surely, 2^1066157860 is an apocalyptic number.

1066157860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066157860 is an abundant number, since it is smaller than the sum of its proper divisors (1172773688).

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

1066157860 is a wasteful number, since it uses less digits than its factorization.

1066157860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53307902 (or 53307900 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1066157860 is about 32652.0728285357. The cubic root of 1066157860 is about 1021.5834242915.

The spelling of 1066157860 in words is "one billion, sixty-six million, one hundred fifty-seven thousand, eight hundred sixty".