660256544 has 24 divisors (see below), whose sum is σ = 1307674368. Its totient is φ = 328148800.

The previous prime is 660256511. The next prime is 660256547. The reversal of 660256544 is 445652066.

660256544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 660256498 and 660256507.

It is not an unprimeable number, because it can be changed into a prime (660256547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56432 + ... + 67119.

It is an arithmetic number, because the mean of its divisors is an integer number (54486432).

Almost surely, 2^660256544 is an apocalyptic number.

It is an amenable number.

660256544 is a deficient number, since it is larger than the sum of its proper divisors (647417824).

660256544 is a wasteful number, since it uses less digits than its factorization.

660256544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123728 (or 123720 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 660256544 is about 25695.4576530561. The cubic root of 660256544 is about 870.7715637381.

The spelling of 660256544 in words is "six hundred sixty million, two hundred fifty-six thousand, five hundred forty-four".