994564 has 6 divisors (see below), whose sum is σ = 1740494. Its totient is φ = 497280.

The previous prime is 994561. The next prime is 994571. The reversal of 994564 is 465499.

It can be written as a sum of positive squares in only one way, i.e., 828100 + 166464 = 910^2 + 408^2 .

It is not an unprimeable number, because it can be changed into a prime (994561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124317 + ... + 124324.

2⁹⁹⁴⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

994564 is a deficient number, since it is larger than the sum of its proper divisors (745930).

994564 is a wasteful number, since it uses less digits than its factorization.

994564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248645 (or 248643 counting only the distinct ones).

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

The square root of 994564 is about 997.2782961641. The cubic root of 994564 is about 99.8184706704.

The spelling of 994564 in words is "nine hundred ninety-four thousand, five hundred sixty-four".