660256516 has 6 divisors (see below), whose sum is σ = 1155448910. Its totient is φ = 330128256.

The previous prime is 660256511. The next prime is 660256547. The reversal of 660256516 is 615652066.

660256516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 603193600 + 57062916 = 24560^2 + 7554^2 .

It is not an unprimeable number, because it can be changed into a prime (660256511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82532061 + ... + 82532068.

Almost surely, 2^660256516 is an apocalyptic number.

It is an amenable number.

660256516 is a deficient number, since it is larger than the sum of its proper divisors (495192394).

660256516 is a wasteful number, since it uses less digits than its factorization.

660256516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165064133 (or 165064131 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 660256516 is about 25695.4571082127. The cubic root of 660256516 is about 870.7715514289.

The spelling of 660256516 in words is "six hundred sixty million, two hundred fifty-six thousand, five hundred sixteen".