217064368 has 10 divisors (see below), whose sum is σ = 420562244. Its totient is φ = 108532176.

The previous prime is 217064327. The next prime is 217064371. The reversal of 217064368 is 863460712.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6783246 + ... + 6783277.

Almost surely, 2^217064368 is an apocalyptic number.

It is an amenable number.

217064368 is a deficient number, since it is larger than the sum of its proper divisors (203497876).

217064368 is a wasteful number, since it uses less digits than its factorization.

217064368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13566531 (or 13566525 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 217064368 is about 14733.1044929438. The cubic root of 217064368 is about 600.9839115740.

The spelling of 217064368 in words is "two hundred seventeen million, sixty-four thousand, three hundred sixty-eight".