506721726 has 24 divisors (see below), whose sum is σ = 1254739824. Its totient is φ = 144777600.

The previous prime is 506721701. The next prime is 506721751. The reversal of 506721726 is 627127605.

It is an interprime number because it is at equal distance from previous prime (506721701) and next prime (506721751).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2010675 + ... + 2010926.

It is an arithmetic number, because the mean of its divisors is an integer number (52280826).

Almost surely, 2^506721726 is an apocalyptic number.

506721726 is an abundant number, since it is smaller than the sum of its proper divisors (748018098).

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

506721726 is a wasteful number, since it uses less digits than its factorization.

506721726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021616 (or 4021613 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 506721726 is about 22510.4803591572. The cubic root of 506721726 is about 797.2413975325.

The spelling of 506721726 in words is "five hundred six million, seven hundred twenty-one thousand, seven hundred twenty-six".