42566685 has 32 divisors (see below), whose sum is σ = 79315200. Its totient is φ = 19089408.

The previous prime is 42566681. The next prime is 42566731. The reversal of 42566685 is 58666524.

It is not a de Polignac number, because 42566685 - 2² = 42566681 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42566681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1741 + ... + 9389.

It is an arithmetic number, because the mean of its divisors is an integer number (2478600).

Almost surely, 2^42566685 is an apocalyptic number.

It is an amenable number.

42566685 is a deficient number, since it is larger than the sum of its proper divisors (36748515).

42566685 is a wasteful number, since it uses less digits than its factorization.

42566685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7717.

The product of its digits is 345600, while the sum is 42.

The square root of 42566685 is about 6524.3149065630. The cubic root of 42566685 is about 349.1590285719.

The spelling of 42566685 in words is "forty-two million, five hundred sixty-six thousand, six hundred eighty-five".