780006670 has 16 divisors (see below), whose sum is σ = 1436664240. Its totient is φ = 304746624.

The previous prime is 780006653. The next prime is 780006683. The reversal of 780006670 is 76600087.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906555 + ... + 907414.

It is an arithmetic number, because the mean of its divisors is an integer number (89791515).

Almost surely, 2^780006670 is an apocalyptic number.

780006670 is a deficient number, since it is larger than the sum of its proper divisors (656657570).

780006670 is a wasteful number, since it uses less digits than its factorization.

780006670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814019.

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

The square root of 780006670 is about 27928.5994994378. The cubic root of 780006670 is about 920.5190321093.

The spelling of 780006670 in words is "seven hundred eighty million, six thousand, six hundred seventy".