1066216554 has 32 divisors (see below), whose sum is σ = 2551631040. Its totient is φ = 328066416.

The previous prime is 1066216517. The next prime is 1066216561. The reversal of 1066216554 is 4556126601.

It is a super-2 number, since 2×1066216554² = 2273635480047269832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758712 + ... + 760115.

It is an arithmetic number, because the mean of its divisors is an integer number (79738470).

Almost surely, 2^1066216554 is an apocalyptic number.

1066216554 is an abundant number, since it is smaller than the sum of its proper divisors (1485414486).

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

1066216554 is a wasteful number, since it uses less digits than its factorization.

1066216554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518851 (or 1518845 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1066216554 is about 32652.9715952469. The cubic root of 1066216554 is about 1021.6021706452.

The spelling of 1066216554 in words is "one billion, sixty-six million, two hundred sixteen thousand, five hundred fifty-four".