635960447 has 4 divisors (see below), whose sum is σ = 643106160. Its totient is φ = 628814736.

The previous prime is 635960417. The next prime is 635960461. The reversal of 635960447 is 744069536.

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

It is a cyclic number.

It is not a de Polignac number, because 635960447 - 2¹⁸ = 635698303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 635960398 and 635960407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635960407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3572723 + ... + 3572900.

It is an arithmetic number, because the mean of its divisors is an integer number (160776540).

Almost surely, 2^635960447 is an apocalyptic number.

635960447 is a deficient number, since it is larger than the sum of its proper divisors (7145713).

635960447 is an equidigital number, since it uses as much as digits as its factorization.

635960447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7145712.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 635960447 is about 25218.2562244101. The cubic root of 635960447 is about 859.9569326729.

The spelling of 635960447 in words is "six hundred thirty-five million, nine hundred sixty thousand, four hundred forty-seven".