478203661 has 8 divisors (see below), whose sum is σ = 515584160. Its totient is φ = 440908272.

The previous prime is 478203643. The next prime is 478203667. The reversal of 478203661 is 166302874.

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 478203661 - 2¹³ = 478195469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478203661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478203667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9351 + ... + 32308.

It is an arithmetic number, because the mean of its divisors is an integer number (64448020).

Almost surely, 2^478203661 is an apocalyptic number.

It is an amenable number.

478203661 is a deficient number, since it is larger than the sum of its proper divisors (37380499).

478203661 is a wasteful number, since it uses less digits than its factorization.

478203661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42555.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 478203661 is about 21867.8682317230. The cubic root of 478203661 is about 781.9955809607.

It can be divided in two parts, 478203 and 661, that added together give a square (478864 = 692²).

The spelling of 478203661 in words is "four hundred seventy-eight million, two hundred three thousand, six hundred sixty-one".