861903706 has 16 divisors (see below), whose sum is σ = 1385403264. Its totient is φ = 400713664.

The previous prime is 861903677. The next prime is 861903737. The reversal of 861903706 is 607309168.

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, 149890 + ... + 155533.

It is an arithmetic number, because the mean of its divisors is an integer number (86587704).

Almost surely, 2^861903706 is an apocalyptic number.

861903706 is a deficient number, since it is larger than the sum of its proper divisors (523499558).

861903706 is a wasteful number, since it uses less digits than its factorization.

861903706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305525.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 861903706 is about 29358.1965726780. The cubic root of 861903706 is about 951.6697158576.

The spelling of 861903706 in words is "eight hundred sixty-one million, nine hundred three thousand, seven hundred six".