22787663 has 4 divisors (see below), whose sum is σ = 23108688. Its totient is φ = 22466640.

The previous prime is 22787647. The next prime is 22787711. The reversal of 22787663 is 36678722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36678722 = 2 ⋅18339361.

It is a cyclic number.

It is not a de Polignac number, because 22787663 - 2⁴ = 22787647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22787663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22787623) 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, 160406 + ... + 160547.

It is an arithmetic number, because the mean of its divisors is an integer number (5777172).

Almost surely, 2^22787663 is an apocalyptic number.

22787663 is a deficient number, since it is larger than the sum of its proper divisors (321025).

22787663 is an equidigital number, since it uses as much as digits as its factorization.

22787663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321024.

The product of its digits is 169344, while the sum is 41.

The square root of 22787663 is about 4773.6425295575. The cubic root of 22787663 is about 283.5088341379.

The spelling of 22787663 in words is "twenty-two million, seven hundred eighty-seven thousand, six hundred sixty-three".