1066540578 has 16 divisors (see below), whose sum is σ = 2157049440. Its totient is φ = 351518816.

The previous prime is 1066540549. The next prime is 1066540597. The reversal of 1066540578 is 8750456601.

1066540578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1066540578² = 2275017609041148168, 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, 998100 + ... + 999167.

It is an arithmetic number, because the mean of its divisors is an integer number (134815590).

Almost surely, 2^1066540578 is an apocalyptic number.

1066540578 is an abundant number, since it is smaller than the sum of its proper divisors (1090508862).

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

1066540578 is a wasteful number, since it uses less digits than its factorization.

1066540578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997361.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 1066540578 is about 32657.9328494625. The cubic root of 1066540578 is about 1021.7056487156.

The spelling of 1066540578 in words is "one billion, sixty-six million, five hundred forty thousand, five hundred seventy-eight".