604642531 has 2 divisors, whose sum is σ = 604642532. Its totient is φ = 604642530.

The previous prime is 604642517. The next prime is 604642541. The reversal of 604642531 is 135246406.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 604642531 - 2⁷ = 604642403 is a prime.

It is a super-2 number, since 2×604642531² = 731185180588171922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 604642493 and 604642502.

It is not a weakly prime, because it can be changed into another prime (604642501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302321265 + 302321266.

It is an arithmetic number, because the mean of its divisors is an integer number (302321266).

Almost surely, 2^604642531 is an apocalyptic number.

604642531 is a deficient number, since it is larger than the sum of its proper divisors (1).

604642531 is an equidigital number, since it uses as much as digits as its factorization.

604642531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 604642531 is about 24589.4800880376. The cubic root of 604642531 is about 845.6024465641.

Adding to 604642531 its reverse (135246406), we get a palindrome (739888937).

The spelling of 604642531 in words is "six hundred four million, six hundred forty-two thousand, five hundred thirty-one".