22066947 has 24 divisors (see below), whose sum is σ = 37606400. Its totient is φ = 12201840.

The previous prime is 22066943. The next prime is 22066949. The reversal of 22066947 is 74966022.

It is a happy number.

It is not a de Polignac number, because 22066947 - 2² = 22066943 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22066943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3697 + ... + 7602.

Almost surely, 2^22066947 is an apocalyptic number.

22066947 is a deficient number, since it is larger than the sum of its proper divisors (15539453).

22066947 is a wasteful number, since it uses less digits than its factorization.

22066947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11343 (or 11340 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 22066947 is about 4697.5469130175. The cubic root of 22066947 is about 280.4878696843.

The spelling of 22066947 in words is "twenty-two million, sixty-six thousand, nine hundred forty-seven".