506398653 has 6 divisors (see below), whose sum is σ = 731464734. Its totient is φ = 337599096.

The previous prime is 506398597. The next prime is 506398661. The reversal of 506398653 is 356893605.

506398653 is a `hidden beast` number, since 5 + 0 + 639 + 8 + 6 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 447830244 + 58568409 = 21162^2 + 7653^2 .

It is not a de Polignac number, because 506398653 - 2⁶ = 506398589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 506398599 and 506398608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506398693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28133250 + ... + 28133267.

It is an arithmetic number, because the mean of its divisors is an integer number (121910789).

Almost surely, 2^506398653 is an apocalyptic number.

It is an amenable number.

506398653 is a deficient number, since it is larger than the sum of its proper divisors (225066081).

506398653 is a wasteful number, since it uses less digits than its factorization.

506398653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56266523 (or 56266520 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 506398653 is about 22503.3031575367. The cubic root of 506398653 is about 797.0719278377.

The spelling of 506398653 in words is "five hundred six million, three hundred ninety-eight thousand, six hundred fifty-three".