1066611567 has 24 divisors (see below), whose sum is σ = 1655581872. Its totient is φ = 609033600.

The previous prime is 1066611449. The next prime is 1066611571. The reversal of 1066611567 is 7651166601.

It is not a de Polignac number, because 1066611567 - 2¹¹ = 1066609519 is a prime.

It is a super-2 number, since 2×1066611567² = 2275320469716390978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066611577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333717 + ... + 336897.

It is an arithmetic number, because the mean of its divisors is an integer number (68982578).

Almost surely, 2^1066611567 is an apocalyptic number.

1066611567 is a deficient number, since it is larger than the sum of its proper divisors (588970305).

1066611567 is a wasteful number, since it uses less digits than its factorization.

1066611567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479 (or 5472 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1066611567 is about 32659.0196882883. The cubic root of 1066611567 is about 1021.7283164742.

The spelling of 1066611567 in words is "one billion, sixty-six million, six hundred eleven thousand, five hundred sixty-seven".