861096945 has 16 divisors (see below), whose sum is σ = 1390633920. Its totient is φ = 454958784.

The previous prime is 861096941. The next prime is 861096949. The reversal of 861096945 is 549690168.

It is an interprime number because it is at equal distance from previous prime (861096941) and next prime (861096949).

It is not a de Polignac number, because 861096945 - 2² = 861096941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 861096894 and 861096903.

It is not an unprimeable number, because it can be changed into a prime (861096941) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 266650 + ... + 269859.

It is an arithmetic number, because the mean of its divisors is an integer number (86914620).

Almost surely, 2^861096945 is an apocalyptic number.

It is an amenable number.

861096945 is a deficient number, since it is larger than the sum of its proper divisors (529536975).

861096945 is a wasteful number, since it uses less digits than its factorization.

861096945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536624.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 861096945 is about 29344.4533941254. The cubic root of 861096945 is about 951.3726951731.

The spelling of 861096945 in words is "eight hundred sixty-one million, ninety-six thousand, nine hundred forty-five".