634384090 has 8 divisors (see below), whose sum is σ = 1141891380. Its totient is φ = 253753632.

The previous prime is 634384081. The next prime is 634384111. The reversal of 634384090 is 90483436.

It can be written as a sum of positive squares in 2 ways, for example, as 602653401 + 31730689 = 24549^2 + 5633^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31719195 + ... + 31719214.

Almost surely, 2^634384090 is an apocalyptic number.

634384090 is a deficient number, since it is larger than the sum of its proper divisors (507507290).

634384090 is a wasteful number, since it uses less digits than its factorization.

634384090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63438416.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 634384090 is about 25186.9825505161. The cubic root of 634384090 is about 859.2458188899.

It can be divided in two parts, 63438 and 4090, that added together give a triangular number (67528 = T₃₆₇).

The spelling of 634384090 in words is "six hundred thirty-four million, three hundred eighty-four thousand, ninety".