6999994 has 16 divisors (see below), whose sum is σ = 10764936. Its totient is φ = 3412800.

The previous prime is 6999989. The next prime is 6999997. The reversal of 6999994 is 4999996.

6999994 = T₁₈₀ + T₁₈₁ + ... + T₃₆₂.

It can be written as a sum of positive squares in 4 ways, for example, as 471969 + 6528025 = 687^2 + 2555^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6999997) 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, 21924 + ... + 22240.

Almost surely, 2^6999994 is an apocalyptic number.

6999994 is a deficient number, since it is larger than the sum of its proper divisors (3764942).

6999994 is a wasteful number, since it uses less digits than its factorization.

6999994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561.

The product of its digits is 1417176, while the sum is 55.

The square root of 6999994 is about 2645.7501771709. The cubic root of 6999994 is about 191.2930636220.

It can be divided in two parts, 6 and 999994, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 6999994 in words is "six million, nine hundred ninety-nine thousand, nine hundred ninety-four".