1066643560 has 32 divisors (see below), whose sum is σ = 2439297000. Its totient is φ = 419662080.

The previous prime is 1066643531. The next prime is 1066643573. The reversal of 1066643560 is 653466601.

It can be written as a sum of positive squares in 4 ways, for example, as 585543204 + 481100356 = 24198^2 + 21934^2 .

It is a super-2 number, since 2×1066643560² = 2275456968178947200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216135 + ... + 221014.

Almost surely, 2^1066643560 is an apocalyptic number.

1066643560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066643560 is an abundant number, since it is smaller than the sum of its proper divisors (1372653440).

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

1066643560 is a wasteful number, since it uses less digits than its factorization.

1066643560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437221 (or 437217 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 1066643560 is about 32659.5094880496. The cubic root of 1066643560 is about 1021.7385319479.

It can be divided in two parts, 106664 and 3560, that added together give a square (110224 = 332²).

The spelling of 1066643560 in words is "one billion, sixty-six million, six hundred forty-three thousand, five hundred sixty".