617996544 has 144 divisors (see below), whose sum is σ = 1808400384. Its totient is φ = 185804800.

The previous prime is 617996531. The next prime is 617996557. The reversal of 617996544 is 445699716.

It is an interprime number because it is at equal distance from previous prime (617996531) and next prime (617996557).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1613377 + ... + 1613759.

It is an arithmetic number, because the mean of its divisors is an integer number (12558336).

Almost surely, 2^617996544 is an apocalyptic number.

617996544 is a gapful number since it is divisible by the number (64) 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 617996544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (904200192).

617996544 is an abundant number, since it is smaller than the sum of its proper divisors (1190403840).

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

617996544 is a wasteful number, since it uses less digits than its factorization.

617996544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 590 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 617996544 is about 24859.5362788609. The cubic root of 617996544 is about 851.7824391048.

The spelling of 617996544 in words is "six hundred seventeen million, nine hundred ninety-six thousand, five hundred forty-four".