2196406 has 4 divisors (see below), whose sum is σ = 3294612. Its totient is φ = 1098202.

The previous prime is 2196401. The next prime is 2196407. The reversal of 2196406 is 6046912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549100 + ... + 549103.

It is an arithmetic number, because the mean of its divisors is an integer number (823653).

2^2196406 is an apocalyptic number.

2196406 is a deficient number, since it is larger than the sum of its proper divisors (1098206).

2196406 is a wasteful number, since it uses less digits than its factorization.

2196406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098205.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2196406 is about 1482.0276650589. The cubic root of 2196406 is about 129.9882829676.

The spelling of 2196406 in words is "two million, one hundred ninety-six thousand, four hundred six".