487664816 has 20 divisors (see below), whose sum is σ = 945667152. Its totient is φ = 243621696.

The previous prime is 487664803. The next prime is 487664831. The reversal of 487664816 is 618466784.

487664816 = T₂₁₉ + T₂₂₀ + ... + T₁₄₃₁.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6845 + ... + 31971.

Almost surely, 2^487664816 is an apocalyptic number.

It is an amenable number.

487664816 is a deficient number, since it is larger than the sum of its proper divisors (458002336).

487664816 is a wasteful number, since it uses less digits than its factorization.

487664816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26348 (or 26342 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The square root of 487664816 is about 22083.1341978443. The cubic root of 487664816 is about 787.1191424843.

The spelling of 487664816 in words is "four hundred eighty-seven million, six hundred sixty-four thousand, eight hundred sixteen".