787660 has 12 divisors (see below), whose sum is σ = 1654128. Its totient is φ = 315056.

The previous prime is 787649. The next prime is 787667. The reversal of 787660 is 66787.

It is not an unprimeable number, because it can be changed into a prime (787667) by changing a digit.

787660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19672 + ... + 19711.

It is an arithmetic number, because the mean of its divisors is an integer number (137844).

2⁷⁸⁷⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

787660 is an abundant number, since it is smaller than the sum of its proper divisors (866468).

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

787660 is a wasteful number, since it uses less digits than its factorization.

787660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39392 (or 39390 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 787660 is about 887.5021126735. The cubic root of 787660 is about 92.3519912017.

The spelling of 787660 in words is "seven hundred eighty-seven thousand, six hundred sixty".