1063540661 has 8 divisors (see below), whose sum is σ = 1072916064. Its totient is φ = 1054184560.

The previous prime is 1063540651. The next prime is 1063540711. The reversal of 1063540661 is 1660453601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1063540661 - 2¹⁰ = 1063539637 is a prime.

It is a super-2 number, since 2×1063540661² = 2262237475200633842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063540601) by changing a digit.

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, 119771 + ... + 128343.

It is an arithmetic number, because the mean of its divisors is an integer number (134114508).

Almost surely, 2^1063540661 is an apocalyptic number.

It is an amenable number.

1063540661 is a deficient number, since it is larger than the sum of its proper divisors (9375403).

1063540661 is an equidigital number, since it uses as much as digits as its factorization.

1063540661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9651.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1063540661 is about 32611.9711302460. The cubic root of 1063540661 is about 1020.7468133823.

The spelling of 1063540661 in words is "one billion, sixty-three million, five hundred forty thousand, six hundred sixty-one".