506665140 has 24 divisors (see below), whose sum is σ = 1418662560. Its totient is φ = 135110688.

The previous prime is 506665129. The next prime is 506665151. The reversal of 506665140 is 41566605.

It is an interprime number because it is at equal distance from previous prime (506665129) and next prime (506665151).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4222150 + ... + 4222269.

It is an arithmetic number, because the mean of its divisors is an integer number (59110940).

Almost surely, 2^506665140 is an apocalyptic number.

It is an amenable number.

506665140 is an abundant number, since it is smaller than the sum of its proper divisors (911997420).

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

506665140 is a wasteful number, since it uses less digits than its factorization.

506665140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8444431 (or 8444429 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 506665140 is about 22509.2234428467. The cubic root of 506665140 is about 797.2117202437.

The spelling of 506665140 in words is "five hundred six million, six hundred sixty-five thousand, one hundred forty".