634577 has 2 divisors, whose sum is σ = 634578. Its totient is φ = 634576.

The previous prime is 634573. The next prime is 634597. The reversal of 634577 is 775436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 633616 + 961 = 796^2 + 31^2 .

It is a cyclic number.

It is not a de Polignac number, because 634577 - 2² = 634573 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (634573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317288 + 317289.

It is an arithmetic number, because the mean of its divisors is an integer number (317289).

2⁶³⁴⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

634577 is a deficient number, since it is larger than the sum of its proper divisors (1).

634577 is an equidigital number, since it uses as much as digits as its factorization.

634577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 32.

The square root of 634577 is about 796.6034145044. The cubic root of 634577 is about 85.9332906148.

The spelling of 634577 in words is "six hundred thirty-four thousand, five hundred seventy-seven".