694445216 has 12 divisors (see below), whose sum is σ = 1367189082. Its totient is φ = 347222592.

The previous prime is 694445209. The next prime is 694445239. The reversal of 694445216 is 612544496.

It can be written as a sum of positive squares in only one way, i.e., 689587600 + 4857616 = 26260^2 + 2204^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10850675 + ... + 10850738.

Almost surely, 2^694445216 is an apocalyptic number.

It is an amenable number.

694445216 is a deficient number, since it is larger than the sum of its proper divisors (672743866).

694445216 is a wasteful number, since it uses less digits than its factorization.

694445216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21701423 (or 21701415 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 694445216 is about 26352.3284739698. The cubic root of 694445216 is about 885.5491356121.

The spelling of 694445216 in words is "six hundred ninety-four million, four hundred forty-five thousand, two hundred sixteen".