1005994 has 12 divisors (see below), whose sum is σ = 1659042. Its totient is φ = 457160.

The previous prime is 1005989. The next prime is 1006003. The reversal of 1005994 is 4995001.

It can be written as a sum of positive squares in only one way, i.e., 874225 + 131769 = 935^2 + 363^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1837 + ... + 2320.

2^1005994 is an apocalyptic number.

1005994 is a deficient number, since it is larger than the sum of its proper divisors (653048).

1005994 is a wasteful number, since it uses less digits than its factorization.

1005994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181 (or 4170 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1005994 is about 1002.9925224048. The cubic root of 1005994 is about 100.1994021236.

It can be divided in two parts, 10059 and 94, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 1005994 in words is "one million, five thousand, nine hundred ninety-four".