861013705 has 16 divisors (see below), whose sum is σ = 1095669504. Its totient is φ = 647299840.

The previous prime is 861013693. The next prime is 861013721. The reversal of 861013705 is 507310168.

It is not a de Polignac number, because 861013705 - 2⁷ = 861013577 is a prime.

It is a Duffinian number.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 50640 + ... + 65470.

It is an arithmetic number, because the mean of its divisors is an integer number (68479344).

Almost surely, 2^861013705 is an apocalyptic number.

861013705 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

861013705 is a deficient number, since it is larger than the sum of its proper divisors (234655799).

861013705 is a wasteful number, since it uses less digits than its factorization.

861013705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15536.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 861013705 is about 29343.0350338884. The cubic root of 861013705 is about 951.3420386113.

The spelling of 861013705 in words is "eight hundred sixty-one million, thirteen thousand, seven hundred five".