660002755 has 8 divisors (see below), whose sum is σ = 794535552. Its totient is φ = 526314048.

The previous prime is 660002731. The next prime is 660002767. The reversal of 660002755 is 557200066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 660002755 - 2⁷ = 660002627 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209299 + ... + 212428.

It is an arithmetic number, because the mean of its divisors is an integer number (99316944).

Almost surely, 2^660002755 is an apocalyptic number.

660002755 is a deficient number, since it is larger than the sum of its proper divisors (134532797).

660002755 is a wasteful number, since it uses less digits than its factorization.

660002755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422045.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 660002755 is about 25690.5187763891. The cubic root of 660002755 is about 870.6599805626.

The spelling of 660002755 in words is "six hundred sixty million, two thousand, seven hundred fifty-five".