478497643 has 6 divisors (see below), whose sum is σ = 518136684. Its totient is φ = 441689976.

The previous prime is 478497637. The next prime is 478497659. The reversal of 478497643 is 346794874.

It is a de Polignac number, because none of the positive numbers 2^k-478497643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478497673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1415505 + ... + 1415842.

It is an arithmetic number, because the mean of its divisors is an integer number (86356114).

Almost surely, 2^478497643 is an apocalyptic number.

478497643 is a deficient number, since it is larger than the sum of its proper divisors (39639041).

478497643 is a wasteful number, since it uses less digits than its factorization.

478497643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831373 (or 2831360 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 52.

The square root of 478497643 is about 21874.5889789957. The cubic root of 478497643 is about 782.1557954954.

The spelling of 478497643 in words is "four hundred seventy-eight million, four hundred ninety-seven thousand, six hundred forty-three".