1994663 has 8 divisors (see below), whose sum is σ = 2192400. Its totient is φ = 1799680.

The previous prime is 1994659. The next prime is 1994669. The reversal of 1994663 is 3664991.

1994663 is nontrivially palindromic in base 8.

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

It is a cyclic number.

It is not a de Polignac number, because 1994663 - 2² = 1994659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994669) 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, 1031 + ... + 2247.

It is an arithmetic number, because the mean of its divisors is an integer number (274050).

2^1994663 is an apocalyptic number.

1994663 is a deficient number, since it is larger than the sum of its proper divisors (197737).

1994663 is a wasteful number, since it uses less digits than its factorization.

1994663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377.

The product of its digits is 34992, while the sum is 38.

The square root of 1994663 is about 1412.3253874373. The cubic root of 1994663 is about 125.8799351778.

The spelling of 1994663 in words is "one million, nine hundred ninety-four thousand, six hundred sixty-three".