1066121635 has 16 divisors (see below), whose sum is σ = 1393120800. Its totient is φ = 780143616.

The previous prime is 1066121603. The next prime is 1066121653. The reversal of 1066121635 is 5361216601.

It is not a de Polignac number, because 1066121635 - 2⁵ = 1066121603 is a prime.

It is a super-2 number, since 2×1066121635² = 2273230681230146450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066121597 and 1066121606.

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 15 ways as a sum of consecutive naturals, for example, 190734 + ... + 196243.

It is an arithmetic number, because the mean of its divisors is an integer number (87070050).

Almost surely, 2^1066121635 is an apocalyptic number.

1066121635 is a deficient number, since it is larger than the sum of its proper divisors (326999165).

1066121635 is a wasteful number, since it uses less digits than its factorization.

1066121635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387030.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1066121635 is about 32651.5181117203. The cubic root of 1066121635 is about 1021.5718539978.

The spelling of 1066121635 in words is "one billion, sixty-six million, one hundred twenty-one thousand, six hundred thirty-five".