634774016 has 80 divisors (see below), whose sum is σ = 1352987064. Its totient is φ = 296484864.

The previous prime is 634774003. The next prime is 634774039. The reversal of 634774016 is 610477436.

It can be written as a sum of positive squares in 4 ways, for example, as 335622400 + 299151616 = 18320^2 + 17296^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2027876 + ... + 2028188.

Almost surely, 2^634774016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634774016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676493532).

634774016 is an abundant number, since it is smaller than the sum of its proper divisors (718213048).

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

634774016 is a wasteful number, since it uses less digits than its factorization.

634774016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 634774016 is about 25194.7219869559. The cubic root of 634774016 is about 859.4218288020.

The spelling of 634774016 in words is "six hundred thirty-four million, seven hundred seventy-four thousand, sixteen".