1066651556 has 24 divisors (see below), whose sum is σ = 1879580640. Its totient is φ = 529638912.

The previous prime is 1066651549. The next prime is 1066651633. The reversal of 1066651556 is 6551566601.

It is a super-2 number, since 2×1066651556² = 2275491083834442272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730355 + ... + 731813.

It is an arithmetic number, because the mean of its divisors is an integer number (78315860).

Almost surely, 2^1066651556 is an apocalyptic number.

It is an amenable number.

1066651556 is a deficient number, since it is larger than the sum of its proper divisors (812929084).

1066651556 is a wasteful number, since it uses less digits than its factorization.

1066651556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603 (or 2601 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 1066651556 is about 32659.6319023960. The cubic root of 1066651556 is about 1021.7410850660.

The spelling of 1066651556 in words is "one billion, sixty-six million, six hundred fifty-one thousand, five hundred fifty-six".