42568663 has 8 divisors (see below), whose sum is σ = 45184608. Its totient is φ = 39965184.

The previous prime is 42568639. The next prime is 42568679. The reversal of 42568663 is 36686524.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42568663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42568613) 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, 4470 + ... + 10252.

It is an arithmetic number, because the mean of its divisors is an integer number (5648076).

Almost surely, 2^42568663 is an apocalyptic number.

42568663 is a deficient number, since it is larger than the sum of its proper divisors (2615945).

42568663 is a wasteful number, since it uses less digits than its factorization.

42568663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233.

The product of its digits is 207360, while the sum is 40.

The square root of 42568663 is about 6524.4664915991. The cubic root of 42568663 is about 349.1644367596.

The spelling of 42568663 in words is "forty-two million, five hundred sixty-eight thousand, six hundred sixty-three".