994645 has 4 divisors (see below), whose sum is σ = 1193580. Its totient is φ = 795712.

The previous prime is 994621. The next prime is 994657. The reversal of 994645 is 546499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 651249 + 343396 = 807^2 + 586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99460 + ... + 99469.

It is an arithmetic number, because the mean of its divisors is an integer number (298395).

2⁹⁹⁴⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

994645 is a deficient number, since it is larger than the sum of its proper divisors (198935).

994645 is a wasteful number, since it uses less digits than its factorization.

994645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198934.

The product of its digits is 38880, while the sum is 37.

The square root of 994645 is about 997.3189058671. The cubic root of 994645 is about 99.8211804262.

The spelling of 994645 in words is "nine hundred ninety-four thousand, six hundred forty-five".