861307746 has 32 divisors (see below), whose sum is σ = 1900378368. Its totient is φ = 258552960.

The previous prime is 861307729. The next prime is 861307789. The reversal of 861307746 is 647703168.

It is a junction number, because it is equal to n+sod(n) for n = 861307698 and 861307707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131466 + ... + 137861.

It is an arithmetic number, because the mean of its divisors is an integer number (59386824).

Almost surely, 2^861307746 is an apocalyptic number.

861307746 is an abundant number, since it is smaller than the sum of its proper divisors (1039070622).

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

861307746 is a wasteful number, since it uses less digits than its factorization.

861307746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269386.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 861307746 is about 29348.0450115506. The cubic root of 861307746 is about 951.4503224963.

The spelling of 861307746 in words is "eight hundred sixty-one million, three hundred seven thousand, seven hundred forty-six".