42806664 has 32 divisors (see below), whose sum is σ = 118908000. Its totient is φ = 14268816.

The previous prime is 42806651. The next prime is 42806693. The reversal of 42806664 is 46660824.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 98874 + ... + 99305.

It is an arithmetic number, because the mean of its divisors is an integer number (3715875).

Almost surely, 2^42806664 is an apocalyptic number.

It is an amenable number.

42806664 is an abundant number, since it is smaller than the sum of its proper divisors (76101336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42806664 is a wasteful number, since it uses less digits than its factorization.

42806664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198194 (or 198184 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 42806664 is about 6542.6801847561. The cubic root of 42806664 is about 349.8139528223.

The spelling of 42806664 in words is "forty-two million, eight hundred six thousand, six hundred sixty-four".