7321604666 has 32 divisors (see below), whose sum is σ = 11770228800. Its totient is φ = 3405386880.

The previous prime is 7321604621. The next prime is 7321604677. The reversal of 7321604666 is 6664061237.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1525166 + ... + 1529958.

It is an arithmetic number, because the mean of its divisors is an integer number (367819650).

Almost surely, 2^7321604666 is an apocalyptic number.

7321604666 is a deficient number, since it is larger than the sum of its proper divisors (4448624134).

7321604666 is a wasteful number, since it uses less digits than its factorization.

7321604666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 7321604666 is about 85566.3757909613. The cubic root of 7321604666 is about 1941.7892468292.

The spelling of 7321604666 in words is "seven billion, three hundred twenty-one million, six hundred four thousand, six hundred sixty-six".