1071711666 has 24 divisors (see below), whose sum is σ = 2323009260. Its totient is φ = 357088416.

The previous prime is 1071711659. The next prime is 1071711677. The reversal of 1071711666 is 6661171701.

It can be written as a sum of positive squares in 2 ways, for example, as 1000393641 + 71318025 = 31629^2 + 8445^2 .

It is a super-2 number, since 2×1071711666² = 2297131790080991112, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1071711666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37420 + ... + 59528.

Almost surely, 2^1071711666 is an apocalyptic number.

1071711666 is an abundant number, since it is smaller than the sum of its proper divisors (1251297594).

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

1071711666 is a wasteful number, since it uses less digits than its factorization.

1071711666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24810 (or 24807 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 1071711666 is about 32737.0075907985. The cubic root of 1071711666 is about 1023.3542229841.

The spelling of 1071711666 in words is "one billion, seventy-one million, seven hundred eleven thousand, six hundred sixty-six".