1608406 has 4 divisors (see below), whose sum is σ = 2412612. Its totient is φ = 804202.

The previous prime is 1608401. The next prime is 1608433. The reversal of 1608406 is 6048061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6048061 = 19 ⋅318319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402100 + ... + 402103.

It is an arithmetic number, because the mean of its divisors is an integer number (603153).

2^1608406 is an apocalyptic number.

1608406 is a deficient number, since it is larger than the sum of its proper divisors (804206).

1608406 is an equidigital number, since it uses as much as digits as its factorization.

1608406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804205.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1608406 is about 1268.2294745037. The cubic root of 1608406 is about 117.1651793103.

The spelling of 1608406 in words is "one million, six hundred eight thousand, four hundred six".