635461 has 2 divisors, whose sum is σ = 635462. Its totient is φ = 635460.

The previous prime is 635449. The next prime is 635471. The reversal of 635461 is 164536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 591361 + 44100 = 769^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 635461 - 2⁷ = 635333 is a prime.

635461 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317730 + 317731.

It is an arithmetic number, because the mean of its divisors is an integer number (317731).

2⁶³⁵⁴⁶¹ is an apocalyptic number.

635461 is the 357-th centered decagonal number.

It is an amenable number.

635461 is a deficient number, since it is larger than the sum of its proper divisors (1).

635461 is an equidigital number, since it uses as much as digits as its factorization.

635461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 635461 is about 797.1580771716. The cubic root of 635461 is about 85.9731753368.

Adding to 635461 its reverse (164536), we get a palindrome (799997).

The spelling of 635461 in words is "six hundred thirty-five thousand, four hundred sixty-one".