1606963 has 8 divisors (see below), whose sum is σ = 1713600. Its totient is φ = 1502568.

The previous prime is 1606951. The next prime is 1606967. The reversal of 1606963 is 3696061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606963 is a prime.

It is an Ulam number.

It is a Duffinian number.

1606963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1606967) 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, 1068 + ... + 2086.

It is an arithmetic number, because the mean of its divisors is an integer number (214200).

2^1606963 is an apocalyptic number.

1606963 is a deficient number, since it is larger than the sum of its proper divisors (106637).

1606963 is a wasteful number, since it uses less digits than its factorization.

1606963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 1606963 is about 1267.6604434942. The cubic root of 1606963 is about 117.1301301292.

The spelling of 1606963 in words is "one million, six hundred six thousand, nine hundred sixty-three".