664669335 has 48 divisors (see below), whose sum is σ = 1174400640. Its totient is φ = 320760000.

The previous prime is 664669331. The next prime is 664669351. The reversal of 664669335 is 533966466.

It is not a de Polignac number, because 664669335 - 2² = 664669331 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664669331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 454836 + ... + 456294.

It is an arithmetic number, because the mean of its divisors is an integer number (24466680).

Almost surely, 2^664669335 is an apocalyptic number.

664669335 is a deficient number, since it is larger than the sum of its proper divisors (509731305).

664669335 is a wasteful number, since it uses less digits than its factorization.

664669335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1729 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 48.

The square root of 664669335 is about 25781.1817999098. The cubic root of 664669335 is about 872.7071770694.

The spelling of 664669335 in words is "six hundred sixty-four million, six hundred sixty-nine thousand, three hundred thirty-five".