506599397 has 4 divisors (see below), whose sum is σ = 506726220. Its totient is φ = 506472576.

The previous prime is 506599367. The next prime is 506599399. The reversal of 506599397 is 793995605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98922916 + 407676481 = 9946^2 + 20191^2 .

It is a cyclic number.

It is not a de Polignac number, because 506599397 - 2⁶ = 506599333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506599399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57218 + ... + 65475.

It is an arithmetic number, because the mean of its divisors is an integer number (126681555).

Almost surely, 2^506599397 is an apocalyptic number.

It is an amenable number.

506599397 is a deficient number, since it is larger than the sum of its proper divisors (126823).

506599397 is a wasteful number, since it uses less digits than its factorization.

506599397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126822.

The product of its (nonzero) digits is 2296350, while the sum is 53.

The square root of 506599397 is about 22507.7630385607. The cubic root of 506599397 is about 797.1772376680.

The spelling of 506599397 in words is "five hundred six million, five hundred ninety-nine thousand, three hundred ninety-seven".