635949 has 12 divisors (see below), whose sum is σ = 967200. Its totient is φ = 401544.

The previous prime is 635939. The next prime is 635959. The reversal of 635949 is 949536.

635949 is a `hidden beast` number, since 63 + 594 + 9 = 666.

635949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (635939) and next prime (635959).

It is not a de Polignac number, because 635949 - 2⁵ = 635917 is a prime.

It is a super-2 number, since 2×635949² = 808862261202, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1689 + ... + 2030.

It is an arithmetic number, because the mean of its divisors is an integer number (80600).

2⁶³⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

635949 is a deficient number, since it is larger than the sum of its proper divisors (331251).

635949 is a wasteful number, since it uses less digits than its factorization.

635949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744 (or 3741 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 635949 is about 797.4641057753. The cubic root of 635949 is about 85.9951773030.

The spelling of 635949 in words is "six hundred thirty-five thousand, nine hundred forty-nine".