478213623 has 12 divisors (see below), whose sum is σ = 699497760. Its totient is φ = 314773056.

The previous prime is 478213559. The next prime is 478213633. The reversal of 478213623 is 326312874.

It is a happy number.

478213623 is a `hidden beast` number, since 4 + 7 + 8 + 21 + 3 + 623 = 666.

It is not a de Polignac number, because 478213623 - 2⁶ = 478213559 is a prime.

It is a super-2 number, since 2×478213623² = 457376538445572258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478213633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335586 + ... + 337007.

It is an arithmetic number, because the mean of its divisors is an integer number (58291480).

Almost surely, 2^478213623 is an apocalyptic number.

478213623 is a deficient number, since it is larger than the sum of its proper divisors (221284137).

478213623 is a wasteful number, since it uses less digits than its factorization.

478213623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672678 (or 672675 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 478213623 is about 21868.0960076546. The cubic root of 478213623 is about 782.0010111337.

The spelling of 478213623 in words is "four hundred seventy-eight million, two hundred thirteen thousand, six hundred twenty-three".