477643867 has 2 divisors, whose sum is σ = 477643868. Its totient is φ = 477643866.

The previous prime is 477643861. The next prime is 477643879. The reversal of 477643867 is 768346774.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477643867 is a prime.

It is not a weakly prime, because it can be changed into another prime (477643861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238821933 + 238821934.

It is an arithmetic number, because the mean of its divisors is an integer number (238821934).

Almost surely, 2^477643867 is an apocalyptic number.

477643867 is a deficient number, since it is larger than the sum of its proper divisors (1).

477643867 is an equidigital number, since it uses as much as digits as its factorization.

477643867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4741632, while the sum is 52.

The square root of 477643867 is about 21855.0650193496. The cubic root of 477643867 is about 781.6903223464.

The spelling of 477643867 in words is "four hundred seventy-seven million, six hundred forty-three thousand, eight hundred sixty-seven".