8217680894 has 8 divisors (see below), whose sum is σ = 12613184760. Its totient is φ = 4013285976.

The previous prime is 8217680869. The next prime is 8217680927. The reversal of 8217680894 is 4980867128.

It is a happy number.

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

It is a super-2 number, since 2×8217680894² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 47777129 + ... + 47777300.

It is an arithmetic number, because the mean of its divisors is an integer number (1576648095).

Almost surely, 2^8217680894 is an apocalyptic number.

8217680894 is a deficient number, since it is larger than the sum of its proper divisors (4395503866).

8217680894 is a wasteful number, since it uses less digits than its factorization.

8217680894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95554474.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 8217680894 is about 90651.4252176986. The cubic root of 8217680894 is about 2017.9779862855.

The spelling of 8217680894 in words is "eight billion, two hundred seventeen million, six hundred eighty thousand, eight hundred ninety-four".