634656041 has 4 divisors (see below), whose sum is σ = 634712532. Its totient is φ = 634599552.

The previous prime is 634656037. The next prime is 634656067. The reversal of 634656041 is 140656436.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 380094016 + 254562025 = 19496^2 + 15955^2 .

It is a cyclic number.

It is not a de Polignac number, because 634656041 - 2² = 634656037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634655992 and 634656010.

It is not an unprimeable number, because it can be changed into a prime (634656541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5036 + ... + 35981.

It is an arithmetic number, because the mean of its divisors is an integer number (158678133).

Almost surely, 2^634656041 is an apocalyptic number.

It is an amenable number.

634656041 is a deficient number, since it is larger than the sum of its proper divisors (56491).

634656041 is a wasteful number, since it uses less digits than its factorization.

634656041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56490.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 634656041 is about 25192.3806139872. The cubic root of 634656041 is about 859.3685833059.

The spelling of 634656041 in words is "six hundred thirty-four million, six hundred fifty-six thousand, forty-one".