635040343 has 12 divisors (see below), whose sum is σ = 739746912. Its totient is φ = 543564000.

The previous prime is 635040337. The next prime is 635040353. The reversal of 635040343 is 343040536.

It is not a de Polignac number, because 635040343 - 2¹⁷ = 634909271 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 (635040313) 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, 28171 + ... + 45427.

It is an arithmetic number, because the mean of its divisors is an integer number (61645576).

Almost surely, 2^635040343 is an apocalyptic number.

635040343 is a deficient number, since it is larger than the sum of its proper divisors (104706569).

635040343 is a wasteful number, since it uses less digits than its factorization.

635040343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18022 (or 18015 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 635040343 is about 25200.0068055546. The cubic root of 635040343 is about 859.5420055517.

Adding to 635040343 its reverse (343040536), we get a palindrome (978080879).

The spelling of 635040343 in words is "six hundred thirty-five million, forty thousand, three hundred forty-three".