611680 has 24 divisors (see below), whose sum is σ = 1445472. Its totient is φ = 244608.

The previous prime is 611671. The next prime is 611693. The reversal of 611680 is 86116.

It is a congruent number.

It is an unprimeable number.

611680 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1752 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (60228).

2⁶¹¹⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

611680 is an abundant number, since it is smaller than the sum of its proper divisors (833792).

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

611680 is a wasteful number, since it uses less digits than its factorization.

611680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838 (or 3830 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 611680 is about 782.0997378851. The cubic root of 611680 is about 84.8870472003.

Adding to 611680 its reverse (86116), we get a palindrome (697796).

The spelling of 611680 in words is "six hundred eleven thousand, six hundred eighty".