8351866 has 4 divisors (see below), whose sum is σ = 12527802. Its totient is φ = 4175932.

The previous prime is 8351851. The next prime is 8351881. The reversal of 8351866 is 6681538.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6681538 = 2 ⋅3340769.

It is an interprime number because it is at equal distance from previous prime (8351851) and next prime (8351881).

It can be written as a sum of positive squares in only one way, i.e., 8208225 + 143641 = 2865^2 + 379^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2087965 + ... + 2087968.

Almost surely, 2^8351866 is an apocalyptic number.

8351866 is a deficient number, since it is larger than the sum of its proper divisors (4175936).

8351866 is a wasteful number, since it uses less digits than its factorization.

8351866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175935.

The product of its digits is 34560, while the sum is 37.

The square root of 8351866 is about 2889.9595152874. The cubic root of 8351866 is about 202.8902478066.

It can be divided in two parts, 835 and 1866, that added together give a triangular number (2701 = T₇₃).

The spelling of 8351866 in words is "eight million, three hundred fifty-one thousand, eight hundred sixty-six".