199612 has 12 divisors (see below), whose sum is σ = 399280. Its totient is φ = 85536.

The previous prime is 199603. The next prime is 199621. The reversal of 199612 is 216991.

It is an interprime number because it is at equal distance from previous prime (199603) and next prime (199621).

199612 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 7129 = 199612 / (1 + 9 + 9 + 6 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3537 + ... + 3592.

2¹⁹⁹⁶¹² is an apocalyptic number.

It is an amenable number.

199612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199612 is a wasteful number, since it uses less digits than its factorization.

199612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140 (or 7138 counting only the distinct ones).

The product of its digits is 972, while the sum is 28.

The square root of 199612 is about 446.7795877164. The cubic root of 199612 is about 58.4425129866.

The spelling of 199612 in words is "one hundred ninety-nine thousand, six hundred twelve".