22066403 has 4 divisors (see below), whose sum is σ = 22091640. Its totient is φ = 22041168.

The previous prime is 22066399. The next prime is 22066409. The reversal of 22066403 is 30466022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22066403 - 2² = 22066399 is a prime.

It is a super-2 number, since 2×22066403² = 973852282716818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22066409) 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, 11258 + ... + 13071.

It is an arithmetic number, because the mean of its divisors is an integer number (5522910).

Almost surely, 2^22066403 is an apocalyptic number.

22066403 is a deficient number, since it is larger than the sum of its proper divisors (25237).

22066403 is an equidigital number, since it uses as much as digits as its factorization.

22066403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25236.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 22066403 is about 4697.4890100989. The cubic root of 22066403 is about 280.4855647792.

The spelling of 22066403 in words is "twenty-two million, sixty-six thousand, four hundred three".