1066616784 has 30 divisors (see below), whose sum is σ = 2985045986. Its totient is φ = 355538880.

The previous prime is 1066616779. The next prime is 1066616791. The reversal of 1066616784 is 4876166601.

It can be written as a sum of positive squares in only one way, i.e., 641102400 + 425514384 = 25320^2 + 20628^2 .

It is a super-2 number, since 2×1066616784² = 2275342727821005312, which contains 22 as substring.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 3703387 + ... + 3703674.

Almost surely, 2^1066616784 is an apocalyptic number.

It is an amenable number.

1066616784 is an abundant number, since it is smaller than the sum of its proper divisors (1918429202).

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

1066616784 is a wasteful number, since it uses less digits than its factorization.

1066616784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7407075 (or 7407066 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1066616784 is about 32659.0995589284. The cubic root of 1066616784 is about 1021.7299822940.

The spelling of 1066616784 in words is "one billion, sixty-six million, six hundred sixteen thousand, seven hundred eighty-four".