1063786566 has 16 divisors (see below), whose sum is σ = 2128032000. Its totient is φ = 354519048.

The previous prime is 1063786561. The next prime is 1063786571. The reversal of 1063786566 is 6656873601.

It is an interprime number because it is at equal distance from previous prime (1063786561) and next prime (1063786571).

It is a super-2 number, since 2×1063786566² = 2263283716004144712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063786561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15975 + ... + 48813.

It is an arithmetic number, because the mean of its divisors is an integer number (133002000).

Almost surely, 2^1063786566 is an apocalyptic number.

1063786566 is an abundant number, since it is smaller than the sum of its proper divisors (1064245434).

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

1063786566 is a wasteful number, since it uses less digits than its factorization.

1063786566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38243.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 1063786566 is about 32615.7410769708. The cubic root of 1063786566 is about 1020.8254774809.

The spelling of 1063786566 in words is "one billion, sixty-three million, seven hundred eighty-six thousand, five hundred sixty-six".