861598106 has 8 divisors (see below), whose sum is σ = 1303834644. Its totient is φ = 426986560.

The previous prime is 861598103. The next prime is 861598109. The reversal of 861598106 is 601895168.

It is an interprime number because it is at equal distance from previous prime (861598103) and next prime (861598109).

It can be written as a sum of positive squares in 2 ways, for example, as 843612025 + 17986081 = 29045^2 + 4241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (861598103) 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 3 ways as a sum of consecutive naturals, for example, 1905965 + ... + 1906416.

Almost surely, 2^861598106 is an apocalyptic number.

861598106 is a deficient number, since it is larger than the sum of its proper divisors (442236538).

861598106 is a wasteful number, since it uses less digits than its factorization.

861598106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812496.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 861598106 is about 29352.9914318796. The cubic root of 861598106 is about 951.5572266307.

The spelling of 861598106 in words is "eight hundred sixty-one million, five hundred ninety-eight thousand, one hundred six".