606506521 has 2 divisors, whose sum is σ = 606506522. Its totient is φ = 606506520.

The previous prime is 606506497. The next prime is 606506531. The reversal of 606506521 is 125605606.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504496521 + 102010000 = 22461^2 + 10100^2 .

It is a cyclic number.

It is not a de Polignac number, because 606506521 - 2⁷ = 606506393 is a prime.

It is not a weakly prime, because it can be changed into another prime (606506531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303253260 + 303253261.

It is an arithmetic number, because the mean of its divisors is an integer number (303253261).

Almost surely, 2^606506521 is an apocalyptic number.

It is an amenable number.

606506521 is a deficient number, since it is larger than the sum of its proper divisors (1).

606506521 is an equidigital number, since it uses as much as digits as its factorization.

606506521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 606506521 is about 24627.3531058455. The cubic root of 606506521 is about 846.4704953125.

The spelling of 606506521 in words is "six hundred six million, five hundred six thousand, five hundred twenty-one".