838566216 has 64 divisors (see below), whose sum is σ = 2451960000. Its totient is φ = 264809088.

The previous prime is 838566173. The next prime is 838566221. The reversal of 838566216 is 612665838.

838566216 is a `hidden beast` number, since 83 + 8 + 566 + 2 + 1 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98061 + ... + 106268.

It is an arithmetic number, because the mean of its divisors is an integer number (38311875).

Almost surely, 2^838566216 is an apocalyptic number.

It is an amenable number.

838566216 is an abundant number, since it is smaller than the sum of its proper divisors (1613393784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

838566216 is a wasteful number, since it uses less digits than its factorization.

838566216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204363 (or 204353 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 838566216 is about 28958.0078044053. The cubic root of 838566216 is about 943.0016527026.

The spelling of 838566216 in words is "eight hundred thirty-eight million, five hundred sixty-six thousand, two hundred sixteen".