8617842 has 12 divisors (see below), whose sum is σ = 18672030. Its totient is φ = 2872608.

The previous prime is 8617837. The next prime is 8617871. The reversal of 8617842 is 2487168.

It can be written as a sum of positive squares in only one way, i.e., 7338681 + 1279161 = 2709^2 + 1131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8617797 and 8617806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 239367 + ... + 239402.

Almost surely, 2^8617842 is an apocalyptic number.

8617842 is an abundant number, since it is smaller than the sum of its proper divisors (10054188).

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

8617842 is a wasteful number, since it uses less digits than its factorization.

8617842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478777 (or 478774 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 8617842 is about 2935.6161193181. The cubic root of 8617842 is about 205.0215483992.

The spelling of 8617842 in words is "eight million, six hundred seventeen thousand, eight hundred forty-two".