634645598496 has 192 divisors, whose sum is σ = 2075099378688. Its totient is φ = 165362254848.

The previous prime is 634645598473. The next prime is 634645598519. The reversal of 634645598496 is 694895546436.

It is an interprime number because it is at equal distance from previous prime (634645598473) and next prime (634645598519).

It is a self number, because there is not a number n which added to its sum of digits gives 634645598496.

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, 287455 + ... + 1162721.

It is an arithmetic number, because the mean of its divisors is an integer number (10807809264).

Almost surely, 2^634645598496 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 634645598496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037549689344).

634645598496 is an abundant number, since it is smaller than the sum of its proper divisors (1440453780192).

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

634645598496 is a wasteful number, since it uses less digits than its factorization.

634645598496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875383 (or 875375 counting only the distinct ones).

The product of its digits is 671846400, while the sum is 69.

The spelling of 634645598496 in words is "six hundred thirty-four billion, six hundred forty-five million, five hundred ninety-eight thousand, four hundred ninety-six".