635608047 has 4 divisors (see below), whose sum is σ = 847477400. Its totient is φ = 423738696.

The previous prime is 635608027. The next prime is 635608093. The reversal of 635608047 is 740806536.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 635608047 - 2⁷ = 635607919 is a prime.

It is a super-2 number, since 2×635608047² = 807995178822308418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 635607996 and 635608014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635608027) 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 3 ways as a sum of consecutive naturals, for example, 105934672 + ... + 105934677.

It is an arithmetic number, because the mean of its divisors is an integer number (211869350).

Almost surely, 2^635608047 is an apocalyptic number.

635608047 is a deficient number, since it is larger than the sum of its proper divisors (211869353).

635608047 is a wasteful number, since it uses less digits than its factorization.

635608047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211869352.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 635608047 is about 25211.2682544929. The cubic root of 635608047 is about 859.7980628265.

The spelling of 635608047 in words is "six hundred thirty-five million, six hundred eight thousand, forty-seven".