617873540 has 48 divisors (see below), whose sum is σ = 1373137920. Its totient is φ = 232888320.

The previous prime is 617873539. The next prime is 617873549. The reversal of 617873540 is 45378716.

It is a super-2 number, since 2×617873540² = 763535422864263200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (617873549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68324 + ... + 76836.

It is an arithmetic number, because the mean of its divisors is an integer number (28607040).

Almost surely, 2^617873540 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 617873540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686568960).

617873540 is an abundant number, since it is smaller than the sum of its proper divisors (755264380).

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

617873540 is a wasteful number, since it uses less digits than its factorization.

617873540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8732 (or 8730 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 617873540 is about 24857.0621755669. The cubic root of 617873540 is about 851.7259233631.

The spelling of 617873540 in words is "six hundred seventeen million, eight hundred seventy-three thousand, five hundred forty".