660344763456 has 315 divisors, whose sum is σ = 2211287608023. Its totient is φ = 188396893440.

The previous prime is 660344763437. The next prime is 660344763487. The reversal of 660344763456 is 654367443066.

The square root of 660344763456 is 812616.

It is a perfect power (a square), and thus also a powerful number.

660344763456 is a `hidden beast` number, since 6 + 60 + 34 + 47 + 63 + 456 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 955636071 + ... + 955636761.

Almost surely, 2^660344763456 is an apocalyptic number.

660344763456 is the 812616-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660344763456

660344763456 is an abundant number, since it is smaller than the sum of its proper divisors (1550942844567).

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

660344763456 is an frugal number, since it uses more digits than its factorization.

660344763456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 54.

The spelling of 660344763456 in words is "six hundred sixty billion, three hundred forty-four million, seven hundred sixty-three thousand, four hundred fifty-six".