634581354 has 48 divisors (see below), whose sum is σ = 1429122240. Its totient is φ = 187598400.

The previous prime is 634581347. The next prime is 634581359. The reversal of 634581354 is 453185436.

It is not an unprimeable number, because it can be changed into a prime (634581359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19107 + ... + 40425.

It is an arithmetic number, because the mean of its divisors is an integer number (29773380).

Almost surely, 2^634581354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634581354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714561120).

634581354 is an abundant number, since it is smaller than the sum of its proper divisors (794540886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634581354 is a wasteful number, since it uses less digits than its factorization.

634581354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21387 (or 21376 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 634581354 is about 25190.8982372602. The cubic root of 634581354 is about 859.3348715129.

The spelling of 634581354 in words is "six hundred thirty-four million, five hundred eighty-one thousand, three hundred fifty-four".