664969329730 has 32 divisors (see below), whose sum is σ = 1208740351104. Its totient is φ = 263367244416.

The previous prime is 664969329727. The next prime is 664969329749. The reversal of 664969329730 is 37923969466.

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, 7705782 + ... + 7791598.

It is an arithmetic number, because the mean of its divisors is an integer number (37773135972).

Almost surely, 2^664969329730 is an apocalyptic number.

664969329730 is a deficient number, since it is larger than the sum of its proper divisors (543771021374).

664969329730 is a wasteful number, since it uses less digits than its factorization.

664969329730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93450.

The product of its (nonzero) digits is 79361856, while the sum is 64.

The spelling of 664969329730 in words is "six hundred sixty-four billion, nine hundred sixty-nine million, three hundred twenty-nine thousand, seven hundred thirty".