9221085687 has 32 divisors (see below), whose sum is σ = 14447149056. Its totient is φ = 5173106400.

The previous prime is 9221085673. The next prime is 9221085691. The reversal of 9221085687 is 7865801229.

It is not a de Polignac number, because 9221085687 - 2⁸ = 9221085431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9221084687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172423 + ... + 219480.

It is an arithmetic number, because the mean of its divisors is an integer number (451473408).

Almost surely, 2^9221085687 is an apocalyptic number.

9221085687 is a deficient number, since it is larger than the sum of its proper divisors (5226063369).

9221085687 is a wasteful number, since it uses less digits than its factorization.

9221085687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391971.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 9221085687 is about 96026.4842999055. The cubic root of 9221085687 is about 2096.9787004231.

The spelling of 9221085687 in words is "nine billion, two hundred twenty-one million, eighty-five thousand, six hundred eighty-seven".