635967 has 6 divisors (see below), whose sum is σ = 918632. Its totient is φ = 423972.

The previous prime is 635959. The next prime is 635969. The reversal of 635967 is 769536.

It is a happy number.

635967 is a `hidden beast` number, since 63 + 596 + 7 = 666.

It is not a de Polignac number, because 635967 - 2³ = 635959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35323 + ... + 35340.

2⁶³⁵⁹⁶⁷ is an apocalyptic number.

635967 is a deficient number, since it is larger than the sum of its proper divisors (282665).

635967 is a wasteful number, since it uses less digits than its factorization.

635967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70669 (or 70666 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 635967 is about 797.4753914699. The cubic root of 635967 is about 85.9959886357.

The spelling of 635967 in words is "six hundred thirty-five thousand, nine hundred sixty-seven".