8197642 has 4 divisors (see below), whose sum is σ = 12296466. Its totient is φ = 4098820.

The previous prime is 8197627. The next prime is 8197687. The reversal of 8197642 is 2467918.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8185321 + 12321 = 2861^2 + 111^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2049409 + ... + 2049412.

Almost surely, 2^8197642 is an apocalyptic number.

8197642 is a deficient number, since it is larger than the sum of its proper divisors (4098824).

8197642 is a wasteful number, since it uses less digits than its factorization.

8197642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4098823.

The product of its digits is 24192, while the sum is 37.

The square root of 8197642 is about 2863.1524583927. The cubic root of 8197642 is about 201.6336364941.

The spelling of 8197642 in words is "eight million, one hundred ninety-seven thousand, six hundred forty-two".