780085860 has 48 divisors (see below), whose sum is σ = 2254705152. Its totient is φ = 201312000.

The previous prime is 780085849. The next prime is 780085883. The reversal of 780085860 is 68580087.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207841 + ... + 211560.

It is an arithmetic number, because the mean of its divisors is an integer number (46973024).

Almost surely, 2^780085860 is an apocalyptic number.

It is an amenable number.

780085860 is an abundant number, since it is smaller than the sum of its proper divisors (1474619292).

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

780085860 is a wasteful number, since it uses less digits than its factorization.

780085860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419444 (or 419442 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 780085860 is about 27930.0171858164. The cubic root of 780085860 is about 920.5501828836.

The spelling of 780085860 in words is "seven hundred eighty million, eighty-five thousand, eight hundred sixty".