635713207240 has 64 divisors (see below), whose sum is σ = 1470462543360. Its totient is φ = 247226668800.

The previous prime is 635713207201. The next prime is 635713207247. The reversal of 635713207240 is 42702317536.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 635713207193 and 635713207202.

It is not an unprimeable number, because it can be changed into a prime (635713207247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835807 + ... + 1403566.

It is an arithmetic number, because the mean of its divisors is an integer number (22975977240).

Almost surely, 2^635713207240 is an apocalyptic number.

It is an amenable number.

635713207240 is an abundant number, since it is smaller than the sum of its proper divisors (834749336120).

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

635713207240 is a wasteful number, since it uses less digits than its factorization.

635713207240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239582 (or 2239578 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 40.

The spelling of 635713207240 in words is "six hundred thirty-five billion, seven hundred thirteen million, two hundred seven thousand, two hundred forty".