22355661 has 8 divisors (see below), whose sum is σ = 29949664. Its totient is φ = 14832720.

The previous prime is 22355653. The next prime is 22355677. The reversal of 22355661 is 16655322.

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

It is not a de Polignac number, because 22355661 - 2³ = 22355653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22355611) 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, 17026 + ... + 18291.

It is an arithmetic number, because the mean of its divisors is an integer number (3743708).

Almost surely, 2^22355661 is an apocalyptic number.

It is an amenable number.

22355661 is a deficient number, since it is larger than the sum of its proper divisors (7594003).

22355661 is a wasteful number, since it uses less digits than its factorization.

22355661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35531.

The product of its digits is 10800, while the sum is 30.

The square root of 22355661 is about 4728.1773443897. The cubic root of 22355661 is about 281.7058322734.

The spelling of 22355661 in words is "twenty-two million, three hundred fifty-five thousand, six hundred sixty-one".