634842516 has 96 divisors (see below), whose sum is σ = 1944069120. Its totient is φ = 156211200.

The previous prime is 634842493. The next prime is 634842539. The reversal of 634842516 is 615248436.

It is an interprime number because it is at equal distance from previous prime (634842493) and next prime (634842539).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 525 + ... + 35636.

It is an arithmetic number, because the mean of its divisors is an integer number (20250720).

Almost surely, 2^634842516 is an apocalyptic number.

634842516 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634842516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972034560).

634842516 is an abundant number, since it is smaller than the sum of its proper divisors (1309226604).

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

634842516 is a wasteful number, since it uses less digits than its factorization.

634842516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36205 (or 36203 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 634842516 is about 25196.0813619896. The cubic root of 634842516 is about 859.4527417864.

The spelling of 634842516 in words is "six hundred thirty-four million, eight hundred forty-two thousand, five hundred sixteen".