664061016 has 32 divisors (see below), whose sum is σ = 1670736240. Its totient is φ = 219942528.

The previous prime is 664061011. The next prime is 664061017. The reversal of 664061016 is 610160466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664061011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84351 + ... + 91886.

Almost surely, 2^664061016 is an apocalyptic number.

It is an amenable number.

664061016 is an abundant number, since it is smaller than the sum of its proper divisors (1006675224).

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

664061016 is a wasteful number, since it uses less digits than its factorization.

664061016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176403 (or 176399 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 664061016 is about 25769.3813662649. The cubic root of 664061016 is about 872.4408559729.

The spelling of 664061016 in words is "six hundred sixty-four million, sixty-one thousand, sixteen".