780006 has 16 divisors (see below), whose sum is σ = 1582848. Its totient is φ = 256200.

The previous prime is 779993. The next prime is 780029. The reversal of 780006 is 600087.

It is a congruent number.

It is an unprimeable number.

780006 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490 + ... + 1341.

It is an arithmetic number, because the mean of its divisors is an integer number (98928).

2⁷⁸⁰⁰⁰⁶ is an apocalyptic number.

780006 is an abundant number, since it is smaller than the sum of its proper divisors (802842).

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

780006 is a wasteful number, since it uses less digits than its factorization.

780006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 780006 is about 883.1794834574. The cubic root of 780006 is about 92.0518768544.

The spelling of 780006 in words is "seven hundred eighty thousand, six".