639196 has 6 divisors (see below), whose sum is σ = 1118600. Its totient is φ = 319596.

The previous prime is 639181. The next prime is 639211. The reversal of 639196 is 691936.

It is an interprime number because it is at equal distance from previous prime (639181) and next prime (639211).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79896 + ... + 79903.

2⁶³⁹¹⁹⁶ is an apocalyptic number.

It is an amenable number.

639196 is a deficient number, since it is larger than the sum of its proper divisors (479404).

639196 is a wasteful number, since it uses less digits than its factorization.

639196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159803 (or 159801 counting only the distinct ones).

The product of its digits is 8748, while the sum is 34.

The square root of 639196 is about 799.4973420844. The cubic root of 639196 is about 86.1412856983.

The spelling of 639196 in words is "six hundred thirty-nine thousand, one hundred ninety-six".