9220861 has 8 divisors (see below), whose sum is σ = 10362240. Its totient is φ = 8141232.

The previous prime is 9220847. The next prime is 9220867. The reversal of 9220861 is 1680229.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9220861 - 2⁵ = 9220829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9220867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15121 + ... + 15718.

It is an arithmetic number, because the mean of its divisors is an integer number (1295280).

Almost surely, 2^9220861 is an apocalyptic number.

It is an amenable number.

9220861 is a deficient number, since it is larger than the sum of its proper divisors (1141379).

9220861 is a wasteful number, since it uses less digits than its factorization.

9220861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30875.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 9220861 is about 3036.5870644525. The cubic root of 9220861 is about 209.6961668167.

The spelling of 9220861 in words is "nine million, two hundred twenty thousand, eight hundred sixty-one".