1063640006 has 32 divisors (see below), whose sum is σ = 1892636928. Its totient is φ = 441937440.

The previous prime is 1063639933. The next prime is 1063640009. The reversal of 1063640006 is 6000463601.

It is a super-2 number, since 2×1063640006² = 2262660124727360072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063640009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11405 + ... + 47511.

It is an arithmetic number, because the mean of its divisors is an integer number (59144904).

Almost surely, 2^1063640006 is an apocalyptic number.

1063640006 is a deficient number, since it is larger than the sum of its proper divisors (828996922).

1063640006 is a wasteful number, since it uses less digits than its factorization.

1063640006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36236.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1063640006 is about 32613.4942316827. The cubic root of 1063640006 is about 1020.7785949395.

The spelling of 1063640006 in words is "one billion, sixty-three million, six hundred forty thousand, six".