22639061 has 4 divisors (see below), whose sum is σ = 23623392. Its totient is φ = 21654732.

The previous prime is 22639037. The next prime is 22639063. The reversal of 22639061 is 16093622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16093622 = 2 ⋅8046811.

It is a cyclic number.

It is not a de Polignac number, because 22639061 - 2¹⁰ = 22638037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22639063) 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, 492131 + ... + 492176.

It is an arithmetic number, because the mean of its divisors is an integer number (5905848).

Almost surely, 2^22639061 is an apocalyptic number.

It is an amenable number.

22639061 is a deficient number, since it is larger than the sum of its proper divisors (984331).

22639061 is an equidigital number, since it uses as much as digits as its factorization.

22639061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984330.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22639061 is about 4758.0522275402. The cubic root of 22639061 is about 282.8912208299.

The spelling of 22639061 in words is "twenty-two million, six hundred thirty-nine thousand, sixty-one".