616791840 has 96 divisors (see below), whose sum is σ = 2220462720. Its totient is φ = 140980224.

The previous prime is 616791829. The next prime is 616791859. The reversal of 616791840 is 48197616.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 616791792 and 616791801.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88425 + ... + 95144.

It is an arithmetic number, because the mean of its divisors is an integer number (23129820).

Almost surely, 2^616791840 is an apocalyptic number.

616791840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

616791840 is an abundant number, since it is smaller than the sum of its proper divisors (1603670880).

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

616791840 is a wasteful number, since it uses less digits than its factorization.

616791840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183594 (or 183586 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 616791840 is about 24835.2942402541. The cubic root of 616791840 is about 851.2285993227.

The spelling of 616791840 in words is "six hundred sixteen million, seven hundred ninety-one thousand, eight hundred forty".