861707854 has 16 divisors (see below), whose sum is σ = 1479424608. Its totient is φ = 368750592.

The previous prime is 861707797. The next prime is 861707863. The reversal of 861707854 is 458707168.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 36307 + ... + 55150.

It is an arithmetic number, because the mean of its divisors is an integer number (92464038).

Almost surely, 2^861707854 is an apocalyptic number.

861707854 is a deficient number, since it is larger than the sum of its proper divisors (617716754).

861707854 is a wasteful number, since it uses less digits than its factorization.

861707854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92139.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 861707854 is about 29354.8608240611. The cubic root of 861707854 is about 951.5976271640.

The spelling of 861707854 in words is "eight hundred sixty-one million, seven hundred seven thousand, eight hundred fifty-four".