478676641 has 4 divisors (see below), whose sum is σ = 481443732. Its totient is φ = 475909552.

The previous prime is 478676629. The next prime is 478676669. The reversal of 478676641 is 146676874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146676874 = 2 ⋅73338437.

It can be written as a sum of positive squares in 2 ways, for example, as 335036416 + 143640225 = 18304^2 + 11985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478676641 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478676041) 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, 1383286 + ... + 1383631.

It is an arithmetic number, because the mean of its divisors is an integer number (120360933).

Almost surely, 2^478676641 is an apocalyptic number.

It is an amenable number.

478676641 is a deficient number, since it is larger than the sum of its proper divisors (2767091).

478676641 is a wasteful number, since it uses less digits than its factorization.

478676641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767090.

The product of its digits is 1354752, while the sum is 49.

The square root of 478676641 is about 21878.6800561643. The cubic root of 478676641 is about 782.2533138224.

The spelling of 478676641 in words is "four hundred seventy-eight million, six hundred seventy-six thousand, six hundred forty-one".