478135661 has 8 divisors (see below), whose sum is σ = 515019264. Its totient is φ = 442593360.

The previous prime is 478135649. The next prime is 478135663. The reversal of 478135661 is 166531874.

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 478135661 - 2⁶ = 478135597 is a prime.

It is a super-2 number, since 2×478135661² = 457227420639813842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478135663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334586 + ... + 336011.

It is an arithmetic number, because the mean of its divisors is an integer number (64377408).

Almost surely, 2^478135661 is an apocalyptic number.

It is an amenable number.

478135661 is a deficient number, since it is larger than the sum of its proper divisors (36883603).

478135661 is a wasteful number, since it uses less digits than its factorization.

478135661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670651.

The product of its digits is 120960, while the sum is 41.

The square root of 478135661 is about 21866.3133838331. The cubic root of 478135661 is about 781.9585129186.

The spelling of 478135661 in words is "four hundred seventy-eight million, one hundred thirty-five thousand, six hundred sixty-one".