22663887 has 8 divisors (see below), whose sum is σ = 30241536. Its totient is φ = 15097752.

The previous prime is 22663871. The next prime is 22663891. The reversal of 22663887 is 78836622.

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

It is not a de Polignac number, because 22663887 - 2⁴ = 22663871 is a prime.

It is a super-3 number, since 3×22663887³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22663687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4218 + ... + 7944.

It is an arithmetic number, because the mean of its divisors is an integer number (3780192).

Almost surely, 2^22663887 is an apocalyptic number.

22663887 is a deficient number, since it is larger than the sum of its proper divisors (7577649).

22663887 is a wasteful number, since it uses less digits than its factorization.

22663887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5757.

The product of its digits is 193536, while the sum is 42.

The square root of 22663887 is about 4760.6603533544. The cubic root of 22663887 is about 282.9945892492.

The spelling of 22663887 in words is "twenty-two million, six hundred sixty-three thousand, eight hundred eighty-seven".