634476745 has 12 divisors (see below), whose sum is σ = 885678084. Its totient is φ = 435069600.

The previous prime is 634476673. The next prime is 634476751. The reversal of 634476745 is 547674436.

It can be written as a sum of positive squares in 2 ways, for example, as 387735481 + 246741264 = 19691^2 + 15708^2 .

It is not a de Polignac number, because 634476745 - 2⁷ = 634476617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634476695 and 634476704.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1294606 + ... + 1295095.

It is an arithmetic number, because the mean of its divisors is an integer number (73806507).

Almost surely, 2^634476745 is an apocalyptic number.

It is an amenable number.

634476745 is a deficient number, since it is larger than the sum of its proper divisors (251201339).

634476745 is a wasteful number, since it uses less digits than its factorization.

634476745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589720 (or 2589713 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 46.

The square root of 634476745 is about 25188.8218263578. The cubic root of 634476745 is about 859.2876492505.

The spelling of 634476745 in words is "six hundred thirty-four million, four hundred seventy-six thousand, seven hundred forty-five".