817211066 has 8 divisors (see below), whose sum is σ = 1400933280. Its totient is φ = 350233308.

The previous prime is 817211053. The next prime is 817211077. The reversal of 817211066 is 660112718.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 29186096 + ... + 29186123.

It is an arithmetic number, because the mean of its divisors is an integer number (175116660).

Almost surely, 2^817211066 is an apocalyptic number.

817211066 is a deficient number, since it is larger than the sum of its proper divisors (583722214).

817211066 is a wasteful number, since it uses less digits than its factorization.

817211066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58372228.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 817211066 is about 28586.9037497942. The cubic root of 817211066 is about 934.9278127803.

The spelling of 817211066 in words is "eight hundred seventeen million, two hundred eleven thousand, sixty-six".