635402 has 4 divisors (see below), whose sum is σ = 953106. Its totient is φ = 317700.

The previous prime is 635389. The next prime is 635413. The reversal of 635402 is 204536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 606841 + 28561 = 779^2 + 169^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158849 + ... + 158852.

2⁶³⁵⁴⁰² is an apocalyptic number.

635402 is a deficient number, since it is larger than the sum of its proper divisors (317704).

635402 is a wasteful number, since it uses less digits than its factorization.

635402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317703.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 635402 is about 797.1210698507. The cubic root of 635402 is about 85.9705144998.

Adding to 635402 its reverse (204536), we get a palindrome (839938).

The spelling of 635402 in words is "six hundred thirty-five thousand, four hundred two".