664566135 has 32 divisors (see below), whose sum is σ = 1143106560. Its totient is φ = 328629888.

The previous prime is 664566101. The next prime is 664566137. The reversal of 664566135 is 531665466.

It is not a de Polignac number, because 664566135 - 2¹² = 664562039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664566137) 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 31 ways as a sum of consecutive naturals, for example, 11412 + ... + 38201.

It is an arithmetic number, because the mean of its divisors is an integer number (35722080).

Almost surely, 2^664566135 is an apocalyptic number.

664566135 is a deficient number, since it is larger than the sum of its proper divisors (478540425).

664566135 is a wasteful number, since it uses less digits than its factorization.

664566135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49687.

The product of its digits is 388800, while the sum is 42.

The square root of 664566135 is about 25779.1802623745. The cubic root of 664566135 is about 872.6620077210.

The spelling of 664566135 in words is "six hundred sixty-four million, five hundred sixty-six thousand, one hundred thirty-five".