201663504 has 60 divisors (see below), whose sum is σ = 645006336. Its totient is φ = 57617856.

The previous prime is 201663487. The next prime is 201663541. The reversal of 201663504 is 405366102.

201663504 is a `hidden beast` number, since 20 + 1 + 6 + 635 + 0 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99024 + ... + 101039.

Almost surely, 2^201663504 is an apocalyptic number.

201663504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201663504 is an abundant number, since it is smaller than the sum of its proper divisors (443342832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201663504 is a wasteful number, since it uses less digits than its factorization.

201663504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200084 (or 200075 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 201663504 is about 14200.8275815179. The cubic root of 201663504 is about 586.4204447706.

It can be divided in two parts, 2016 and 63504, that multiplied together give a cube (128024064 = 504³).

The spelling of 201663504 in words is "two hundred one million, six hundred sixty-three thousand, five hundred four".