660455063 has 4 divisors (see below), whose sum is σ = 664104168. Its totient is φ = 656805960.

The previous prime is 660455057. The next prime is 660455111. The reversal of 660455063 is 360554066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660455063 - 2⁸ = 660454807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660455023) 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, 1824281 + ... + 1824642.

It is an arithmetic number, because the mean of its divisors is an integer number (166026042).

Almost surely, 2^660455063 is an apocalyptic number.

660455063 is a deficient number, since it is larger than the sum of its proper divisors (3649105).

660455063 is a wasteful number, since it uses less digits than its factorization.

660455063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649104.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 660455063 is about 25699.3202828402. The cubic root of 660455063 is about 870.8588264743.

The spelling of 660455063 in words is "six hundred sixty million, four hundred fifty-five thousand, sixty-three".