634813741 has 4 divisors (see below), whose sum is σ = 656703900. Its totient is φ = 612923584.

The previous prime is 634813727. The next prime is 634813759. The reversal of 634813741 is 147318436.

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

It can be written as a sum of positive squares in 2 ways, for example, as 491508900 + 143304841 = 22170^2 + 11971^2 .

It is not a de Polignac number, because 634813741 - 2⁹ = 634813229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 634813741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634813721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10945036 + ... + 10945093.

It is an arithmetic number, because the mean of its divisors is an integer number (164175975).

Almost surely, 2^634813741 is an apocalyptic number.

It is an amenable number.

634813741 is a deficient number, since it is larger than the sum of its proper divisors (21890159).

634813741 is a wasteful number, since it uses less digits than its factorization.

634813741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21890158.

The product of its digits is 48384, while the sum is 37.

The square root of 634813741 is about 25195.5103341845. The cubic root of 634813741 is about 859.4397563474.

The spelling of 634813741 in words is "six hundred thirty-four million, eight hundred thirteen thousand, seven hundred forty-one".