663055607 has 16 divisors (see below), whose sum is σ = 717141600. Its totient is φ = 610790400.

The previous prime is 663055579. The next prime is 663055633. The reversal of 663055607 is 706550366.

It is a cyclic number.

It is not a de Polignac number, because 663055607 - 2¹² = 663051511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663054607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150644 + ... + 154982.

It is an arithmetic number, because the mean of its divisors is an integer number (44821350).

Almost surely, 2^663055607 is an apocalyptic number.

663055607 is a deficient number, since it is larger than the sum of its proper divisors (54085993).

663055607 is a wasteful number, since it uses less digits than its factorization.

663055607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 663055607 is about 25749.8661549920. The cubic root of 663055607 is about 872.0003327265. Note that the first 3 decimals are identical.

The spelling of 663055607 in words is "six hundred sixty-three million, fifty-five thousand, six hundred seven".