42647667 has 16 divisors (see below), whose sum is σ = 58803360. Its totient is φ = 27475200.

The previous prime is 42647639. The next prime is 42647677. The reversal of 42647667 is 76674624.

It is not a de Polignac number, because 42647667 - 2⁸ = 42647411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42647617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11817 + ... + 14997.

It is an arithmetic number, because the mean of its divisors is an integer number (3675210).

Almost surely, 2^42647667 is an apocalyptic number.

42647667 is a deficient number, since it is larger than the sum of its proper divisors (16155693).

42647667 is a wasteful number, since it uses less digits than its factorization.

42647667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334.

The product of its digits is 338688, while the sum is 42.

The square root of 42647667 is about 6530.5181264583. The cubic root of 42647667 is about 349.3803102635.

The spelling of 42647667 in words is "forty-two million, six hundred forty-seven thousand, six hundred sixty-seven".