616867860 has 72 divisors (see below), whose sum is σ = 2009236320. Its totient is φ = 140997696.

The previous prime is 616867817. The next prime is 616867877. The reversal of 616867860 is 68768616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101970 + ... + 107849.

It is an arithmetic number, because the mean of its divisors is an integer number (27906060).

Almost surely, 2^616867860 is an apocalyptic number.

616867860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

616867860 is an abundant number, since it is smaller than the sum of its proper divisors (1392368460).

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

616867860 is a wasteful number, since it uses less digits than its factorization.

616867860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209845 (or 209836 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 616867860 is about 24836.8246762745. The cubic root of 616867860 is about 851.2635693810.

The spelling of 616867860 in words is "six hundred sixteen million, eight hundred sixty-seven thousand, eight hundred sixty".