605721497 has 2 divisors, whose sum is σ = 605721498. Its totient is φ = 605721496.

The previous prime is 605721481. The next prime is 605721503. The reversal of 605721497 is 794127506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426670336 + 179051161 = 20656^2 + 13381^2 .

It is a cyclic number.

It is not a de Polignac number, because 605721497 - 2⁴ = 605721481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (605721397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302860748 + 302860749.

It is an arithmetic number, because the mean of its divisors is an integer number (302860749).

Almost surely, 2^605721497 is an apocalyptic number.

It is an amenable number.

605721497 is a deficient number, since it is larger than the sum of its proper divisors (1).

605721497 is an equidigital number, since it uses as much as digits as its factorization.

605721497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 605721497 is about 24611.4098945997. The cubic root of 605721497 is about 846.1051315267.

The spelling of 605721497 in words is "six hundred five million, seven hundred twenty-one thousand, four hundred ninety-seven".