12197906 has 16 divisors (see below), whose sum is σ = 20955840. Its totient is φ = 5216400.

The previous prime is 12197903. The next prime is 12197909. The reversal of 12197906 is 60979121.

It is an interprime number because it is at equal distance from previous prime (12197903) and next prime (12197909).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12197903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11081 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (1309740).

Almost surely, 2^12197906 is an apocalyptic number.

12197906 is a deficient number, since it is larger than the sum of its proper divisors (8757934).

12197906 is a wasteful number, since it uses less digits than its factorization.

12197906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 12197906 is about 3492.5500712230. The cubic root of 12197906 is about 230.1945801402.

The spelling of 12197906 in words is "twelve million, one hundred ninety-seven thousand, nine hundred six".