634813045 has 16 divisors (see below), whose sum is σ = 807271920. Its totient is φ = 478374400.

The previous prime is 634813043. The next prime is 634813051. The reversal of 634813045 is 540318436.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1737124 + 633075921 = 1318^2 + 25161^2 .

It is not a de Polignac number, because 634813045 - 2¹ = 634813043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634813045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634813043) 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, 47446 + ... + 59335.

It is an arithmetic number, because the mean of its divisors is an integer number (50454495).

Almost surely, 2^634813045 is an apocalyptic number.

It is an amenable number.

634813045 is a deficient number, since it is larger than the sum of its proper divisors (172458875).

634813045 is a wasteful number, since it uses less digits than its factorization.

634813045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106856.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 634813045 is about 25195.4965221962. The cubic root of 634813045 is about 859.4394422551.

The spelling of 634813045 in words is "six hundred thirty-four million, eight hundred thirteen thousand, forty-five".