1606913 has 16 divisors (see below), whose sum is σ = 2056320. Its totient is φ = 1219200.

The previous prime is 1606909. The next prime is 1606921. The reversal of 1606913 is 3196061.

It is a cyclic number.

It is not a de Polignac number, because 1606913 - 2² = 1606909 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1600913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2903 + ... + 3411.

It is an arithmetic number, because the mean of its divisors is an integer number (128520).

2^1606913 is an apocalyptic number.

It is an amenable number.

1606913 is a deficient number, since it is larger than the sum of its proper divisors (449407).

1606913 is a wasteful number, since it uses less digits than its factorization.

1606913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1606913 is about 1267.6407219713. The cubic root of 1606913 is about 117.1289152978.

The spelling of 1606913 in words is "one million, six hundred six thousand, nine hundred thirteen".