506868621 has 8 divisors (see below), whose sum is σ = 772371264. Its totient is φ = 289639200.

The previous prime is 506868613. The next prime is 506868623. The reversal of 506868621 is 126868605.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 506868621 - 2³ = 506868613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506868623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12068280 + ... + 12068321.

It is an arithmetic number, because the mean of its divisors is an integer number (96546408).

Almost surely, 2^506868621 is an apocalyptic number.

It is an amenable number.

506868621 is a deficient number, since it is larger than the sum of its proper divisors (265502643).

506868621 is a wasteful number, since it uses less digits than its factorization.

506868621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24136611.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 506868621 is about 22513.7429362601. The cubic root of 506868621 is about 797.3184282803.

The spelling of 506868621 in words is "five hundred six million, eight hundred sixty-eight thousand, six hundred twenty-one".