635960442 has 64 divisors (see below), whose sum is σ = 1446875136. Its totient is φ = 184873920.

The previous prime is 635960417. The next prime is 635960461. The reversal of 635960442 is 244069536.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 635960442.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146767 + ... + 151037.

It is an arithmetic number, because the mean of its divisors is an integer number (22607424).

Almost surely, 2^635960442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 635960442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723437568).

635960442 is an abundant number, since it is smaller than the sum of its proper divisors (810914694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

635960442 is a wasteful number, since it uses less digits than its factorization.

635960442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 635960442 is about 25218.2561252756. The cubic root of 635960442 is about 859.9569304192.

The spelling of 635960442 in words is "six hundred thirty-five million, nine hundred sixty thousand, four hundred forty-two".