861196790 has 16 divisors (see below), whose sum is σ = 1560422880. Its totient is φ = 342196800.

The previous prime is 861196781. The next prime is 861196807. The reversal of 861196790 is 97691168.

It is a super-2 number, since 2×861196790² = 1483319822212608200, which contains 22 as substring.

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, 283655 + ... + 286674.

It is an arithmetic number, because the mean of its divisors is an integer number (97526430).

Almost surely, 2^861196790 is an apocalyptic number.

861196790 is a deficient number, since it is larger than the sum of its proper divisors (699226090).

861196790 is a wasteful number, since it uses less digits than its factorization.

861196790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570487.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 861196790 is about 29346.1546032866. The cubic root of 861196790 is about 951.4094646047.

The spelling of 861196790 in words is "eight hundred sixty-one million, one hundred ninety-six thousand, seven hundred ninety".