42616660 has 24 divisors (see below), whose sum is σ = 92582280. Its totient is φ = 16458624.

The previous prime is 42616649. The next prime is 42616667. The reversal of 42616660 is 6661624.

It can be written as a sum of positive squares in 4 ways, for example, as 17875984 + 24740676 = 4228^2 + 4974^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42616667) 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 7 ways as a sum of consecutive naturals, for example, 36159 + ... + 37318.

It is an arithmetic number, because the mean of its divisors is an integer number (3857595).

Almost surely, 2^42616660 is an apocalyptic number.

It is an amenable number.

42616660 is an abundant number, since it is smaller than the sum of its proper divisors (49965620).

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

42616660 is a wasteful number, since it uses less digits than its factorization.

42616660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73515 (or 73513 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 42616660 is about 6528.1436871441. The cubic root of 42616660 is about 349.2956173792.

The spelling of 42616660 in words is "forty-two million, six hundred sixteen thousand, six hundred sixty".