1066874543 has 4 divisors (see below), whose sum is σ = 1219285200. Its totient is φ = 914463888.

The previous prime is 1066874519. The next prime is 1066874563. The reversal of 1066874543 is 3454786601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1066874543 - 2²² = 1062680239 is a prime.

It is a super-2 number, since 2×1066874543² = 2276442581002917698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066874494 and 1066874503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066874513) 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, 76205318 + ... + 76205331.

It is an arithmetic number, because the mean of its divisors is an integer number (304821300).

Almost surely, 2^1066874543 is an apocalyptic number.

1066874543 is a deficient number, since it is larger than the sum of its proper divisors (152410657).

1066874543 is an equidigital number, since it uses as much as digits as its factorization.

1066874543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152410656.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 1066874543 is about 32663.0455254864. The cubic root of 1066874543 is about 1021.8122795447.

The spelling of 1066874543 in words is "one billion, sixty-six million, eight hundred seventy-four thousand, five hundred forty-three".