664405022306 has 16 divisors (see below), whose sum is σ = 1000393804800. Its totient is φ = 330942235008.

The previous prime is 664405022251. The next prime is 664405022329. The reversal of 664405022306 is 603220504466.

It is a self number, because there is not a number n which added to its sum of digits gives 664405022306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280655 + ... + 1186413.

It is an arithmetic number, because the mean of its divisors is an integer number (62524612800).

Almost surely, 2^664405022306 is an apocalyptic number.

664405022306 is a deficient number, since it is larger than the sum of its proper divisors (335988782494).

664405022306 is a wasteful number, since it uses less digits than its factorization.

664405022306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907153.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 664405022306 in words is "six hundred sixty-four billion, four hundred five million, twenty-two thousand, three hundred six".