42606663 has 8 divisors (see below), whose sum is σ = 61973376. Its totient is φ = 25822200.

The previous prime is 42606659. The next prime is 42606677. The reversal of 42606663 is 36660624.

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

It is not a de Polignac number, because 42606663 - 2² = 42606659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1291111 = 42606663 / (4 + 2 + 6 + 0 + 6 + 6 + 6 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42606623) 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, 645523 + ... + 645588.

It is an arithmetic number, because the mean of its divisors is an integer number (7746672).

Almost surely, 2^42606663 is an apocalyptic number.

42606663 is a deficient number, since it is larger than the sum of its proper divisors (19366713).

42606663 is a wasteful number, since it uses less digits than its factorization.

42606663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291125.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 42606663 is about 6527.3779574956. The cubic root of 42606663 is about 349.2683026986.

The spelling of 42606663 in words is "forty-two million, six hundred six thousand, six hundred sixty-three".