635483881 has 2 divisors, whose sum is σ = 635483882. Its totient is φ = 635483880.

The previous prime is 635483869. The next prime is 635483999. The reversal of 635483881 is 188384536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496621225 + 138862656 = 22285^2 + 11784^2 .

It is a cyclic number.

It is not a de Polignac number, because 635483881 - 2⁷ = 635483753 is a prime.

It is a super-2 number, since 2×635483881² = 807679526021644322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (635486881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317741940 + 317741941.

It is an arithmetic number, because the mean of its divisors is an integer number (317741941).

Almost surely, 2^635483881 is an apocalyptic number.

It is an amenable number.

635483881 is a deficient number, since it is larger than the sum of its proper divisors (1).

635483881 is an equidigital number, since it uses as much as digits as its factorization.

635483881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 46.

The square root of 635483881 is about 25208.8056242258. The cubic root of 635483881 is about 859.7420720109.

The spelling of 635483881 in words is "six hundred thirty-five million, four hundred eighty-three thousand, eight hundred eighty-one".