11197906 has 4 divisors (see below), whose sum is σ = 16796862. Its totient is φ = 5598952.

The previous prime is 11197903. The next prime is 11197919. The reversal of 11197906 is 60979111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60979111 = 137 ⋅445103.

It can be written as a sum of positive squares in only one way, i.e., 6974881 + 4223025 = 2641^2 + 2055^2 .

It is not an unprimeable number, because it can be changed into a prime (11197903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2799475 + ... + 2799478.

Almost surely, 2^11197906 is an apocalyptic number.

11197906 is a deficient number, since it is larger than the sum of its proper divisors (5598956).

11197906 is an equidigital number, since it uses as much as digits as its factorization.

11197906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598955.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 11197906 is about 3346.3272404234. The cubic root of 11197906 is about 223.7238438886.

It can be divided in two parts, 1119 and 7906, that added together give a square (9025 = 95²).

The spelling of 11197906 in words is "eleven million, one hundred ninety-seven thousand, nine hundred six".