42648660 has 48 divisors (see below), whose sum is σ = 132686400. Its totient is φ = 11372832.

The previous prime is 42648643. The next prime is 42648667. The reversal of 42648660 is 6684624.

It is a happy number.

42648660 is a `hidden beast` number, since 4 + 2 + 648 + 6 + 6 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42648667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38950 + ... + 40029.

It is an arithmetic number, because the mean of its divisors is an integer number (2764300).

Almost surely, 2^42648660 is an apocalyptic number.

It is an amenable number.

42648660 is an abundant number, since it is smaller than the sum of its proper divisors (90037740).

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

42648660 is a wasteful number, since it uses less digits than its factorization.

42648660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78997 (or 78989 counting only the distinct ones).

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

The square root of 42648660 is about 6530.5941536739. The cubic root of 42648660 is about 349.3830218769.

The spelling of 42648660 in words is "forty-two million, six hundred forty-eight thousand, six hundred sixty".