478642678 has 8 divisors (see below), whose sum is σ = 718109568. Its totient is φ = 239272824.

The previous prime is 478642649. The next prime is 478642679. The reversal of 478642678 is 876246874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×478642678³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478642679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10326 + ... + 32617.

It is an arithmetic number, because the mean of its divisors is an integer number (89763696).

Almost surely, 2^478642678 is an apocalyptic number.

478642678 is a deficient number, since it is larger than the sum of its proper divisors (239466890).

478642678 is a wasteful number, since it uses less digits than its factorization.

478642678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48518.

The product of its digits is 3612672, while the sum is 52.

The square root of 478642678 is about 21877.9038758287. The cubic root of 478642678 is about 782.2348126079.

The spelling of 478642678 in words is "four hundred seventy-eight million, six hundred forty-two thousand, six hundred seventy-eight".