478651 has 2 divisors, whose sum is σ = 478652. Its totient is φ = 478650.

The previous prime is 478637. The next prime is 478679. The reversal of 478651 is 156874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478651 - 2⁷ = 478523 is a prime.

It is not a weakly prime, because it can be changed into another prime (478631) 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 as a sum of consecutive naturals, namely, 239325 + 239326.

It is an arithmetic number, because the mean of its divisors is an integer number (239326).

2⁴⁷⁸⁶⁵¹ is an apocalyptic number.

478651 is a deficient number, since it is larger than the sum of its proper divisors (1).

478651 is an equidigital number, since it uses as much as digits as its factorization.

478651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 478651 is about 691.8460811481. The cubic root of 478651 is about 78.2239346067.

The spelling of 478651 in words is "four hundred seventy-eight thousand, six hundred fifty-one".