635396 has 6 divisors (see below), whose sum is σ = 1111950. Its totient is φ = 317696.

The previous prime is 635389. The next prime is 635413. The reversal of 635396 is 693536.

It can be written as a sum of positive squares in only one way, i.e., 348100 + 287296 = 590^2 + 536^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79421 + ... + 79428.

It is an arithmetic number, because the mean of its divisors is an integer number (185325).

2⁶³⁵³⁹⁶ is an apocalyptic number.

It is an amenable number.

635396 is a deficient number, since it is larger than the sum of its proper divisors (476554).

635396 is a wasteful number, since it uses less digits than its factorization.

635396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158853 (or 158851 counting only the distinct ones).

The product of its digits is 14580, while the sum is 32.

The square root of 635396 is about 797.1173062981. The cubic root of 635396 is about 85.9702438970.

The spelling of 635396 in words is "six hundred thirty-five thousand, three hundred ninety-six".