635957047 has 16 divisors (see below), whose sum is σ = 720576000. Its totient is φ = 556224640.

The previous prime is 635957041. The next prime is 635957053. The reversal of 635957047 is 740759536.

It is an interprime number because it is at equal distance from previous prime (635957041) and next prime (635957053).

It is a cyclic number.

It is not a de Polignac number, because 635957047 - 2¹¹ = 635954999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 635956988 and 635957006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635957041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20079 + ... + 40927.

It is an arithmetic number, because the mean of its divisors is an integer number (45036000).

Almost surely, 2^635957047 is an apocalyptic number.

635957047 is a deficient number, since it is larger than the sum of its proper divisors (84618953).

635957047 is a wasteful number, since it uses less digits than its factorization.

635957047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20966.

The product of its (nonzero) digits is 793800, while the sum is 46.

The square root of 635957047 is about 25218.1888128390. The cubic root of 635957047 is about 859.9554001569.

The spelling of 635957047 in words is "six hundred thirty-five million, nine hundred fifty-seven thousand, forty-seven".