22691066 has 8 divisors (see below), whose sum is σ = 34099380. Its totient is φ = 11324608.

The previous prime is 22691059. The next prime is 22691069. The reversal of 22691066 is 66019622.

It can be written as a sum of positive squares in 2 ways, for example, as 22287841 + 403225 = 4721^2 + 635^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22691069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9071 + ... + 11298.

Almost surely, 2^22691066 is an apocalyptic number.

22691066 is a deficient number, since it is larger than the sum of its proper divisors (11408314).

22691066 is a wasteful number, since it uses less digits than its factorization.

22691066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20928.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 22691066 is about 4763.5140390262. The cubic root of 22691066 is about 283.1076683720.

The spelling of 22691066 in words is "twenty-two million, six hundred ninety-one thousand, sixty-six".