861084086 has 32 divisors (see below), whose sum is σ = 1374658560. Its totient is φ = 403898400.

The previous prime is 861084079. The next prime is 861084101. The reversal of 861084086 is 680480168.

It is a congruent number.

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, 316271 + ... + 318981.

It is an arithmetic number, because the mean of its divisors is an integer number (42958080).

Almost surely, 2^861084086 is an apocalyptic number.

861084086 is a deficient number, since it is larger than the sum of its proper divisors (513574474).

861084086 is a wasteful number, since it uses less digits than its factorization.

861084086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 861084086 is about 29344.2342888684. The cubic root of 861084086 is about 951.3679594452.

The spelling of 861084086 in words is "eight hundred sixty-one million, eighty-four thousand, eighty-six".