663555466 has 16 divisors (see below), whose sum is σ = 1149253056. Its totient is φ = 281448576.

The previous prime is 663555463. The next prime is 663555469. The reversal of 663555466 is 664555366.

It is an interprime number because it is at equal distance from previous prime (663555463) and next prime (663555469).

It is not an unprimeable number, because it can be changed into a prime (663555461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242956 + ... + 245671.

It is an arithmetic number, because the mean of its divisors is an integer number (71828316).

Almost surely, 2^663555466 is an apocalyptic number.

663555466 is a deficient number, since it is larger than the sum of its proper divisors (485697590).

663555466 is a wasteful number, since it uses less digits than its factorization.

663555466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488733.

The product of its digits is 1944000, while the sum is 46.

The square root of 663555466 is about 25759.5703768522. The cubic root of 663555466 is about 872.2194032055.

The spelling of 663555466 in words is "six hundred sixty-three million, five hundred fifty-five thousand, four hundred sixty-six".