1994667 has 8 divisors (see below), whose sum is σ = 2666640. Its totient is φ = 1326240.

The previous prime is 1994659. The next prime is 1994669. The reversal of 1994667 is 7664991.

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

It is not a de Polignac number, because 1994667 - 2³ = 1994659 is a prime.

It is an Ulam 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, 1009 + ... + 2237.

It is an arithmetic number, because the mean of its divisors is an integer number (333330).

2^1994667 is an apocalyptic number.

1994667 is a deficient number, since it is larger than the sum of its proper divisors (671973).

1994667 is a wasteful number, since it uses less digits than its factorization.

1994667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773.

The product of its digits is 81648, while the sum is 42.

The square root of 1994667 is about 1412.3268035409. The cubic root of 1994667 is about 125.8800193222.

The spelling of 1994667 in words is "one million, nine hundred ninety-four thousand, six hundred sixty-seven".