1006636564 has 6 divisors (see below), whose sum is σ = 1761613994. Its totient is φ = 503318280.

The previous prime is 1006636531. The next prime is 1006636567. The reversal of 1006636564 is 4656366001.

It can be written as a sum of positive squares in only one way, i.e., 894488464 + 112148100 = 29908^2 + 10590^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006636567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125829567 + ... + 125829574.

Almost surely, 2^1006636564 is an apocalyptic number.

It is an amenable number.

1006636564 is a deficient number, since it is larger than the sum of its proper divisors (754977430).

1006636564 is a wasteful number, since it uses less digits than its factorization.

1006636564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251659145 (or 251659143 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 1006636564 is about 31727.5363682716. The cubic root of 1006636564 is about 1002.2073121881.

The spelling of 1006636564 in words is "one billion, six million, six hundred thirty-six thousand, five hundred sixty-four".