664611366 has 32 divisors (see below), whose sum is σ = 1340172288. Its totient is φ = 219719520.

The previous prime is 664611359. The next prime is 664611373. The reversal of 664611366 is 663116466.

664611366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (664611359) and next prime (664611373).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610875 + ... + 611961.

It is an arithmetic number, because the mean of its divisors is an integer number (41880384).

Almost surely, 2^664611366 is an apocalyptic number.

664611366 is an abundant number, since it is smaller than the sum of its proper divisors (675560922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664611366 is a wasteful number, since it uses less digits than its factorization.

664611366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836.

The product of its digits is 93312, while the sum is 39.

The square root of 664611366 is about 25780.0575251492. The cubic root of 664611366 is about 872.6818053392.

The spelling of 664611366 in words is "six hundred sixty-four million, six hundred eleven thousand, three hundred sixty-six".