660430064 has 40 divisors (see below), whose sum is σ = 1464572928. Its totient is φ = 282617280.

The previous prime is 660430049. The next prime is 660430097. The reversal of 660430064 is 460034066.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 77369 + ... + 85479.

Almost surely, 2^660430064 is an apocalyptic number.

It is an amenable number.

660430064 is an abundant number, since it is smaller than the sum of its proper divisors (804142864).

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

660430064 is a wasteful number, since it uses less digits than its factorization.

660430064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853 (or 8847 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 660430064 is about 25698.8339035062. The cubic root of 660430064 is about 870.8478386591.

The spelling of 660430064 in words is "six hundred sixty million, four hundred thirty thousand, sixty-four".