694616245 has 4 divisors (see below), whose sum is σ = 833539500. Its totient is φ = 555692992.

The previous prime is 694616203. The next prime is 694616249. The reversal of 694616245 is 542616496.

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 270832849 + 423783396 = 16457^2 + 20586^2 .

It is a cyclic number.

It is not a de Polignac number, because 694616245 - 2¹¹ = 694614197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694616249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69461620 + ... + 69461629.

It is an arithmetic number, because the mean of its divisors is an integer number (208384875).

Almost surely, 2^694616245 is an apocalyptic number.

It is an amenable number.

694616245 is a deficient number, since it is larger than the sum of its proper divisors (138923255).

694616245 is a wasteful number, since it uses less digits than its factorization.

694616245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138923254.

The product of its digits is 311040, while the sum is 43.

The square root of 694616245 is about 26355.5733195087. The cubic root of 694616245 is about 885.6218277640.

The spelling of 694616245 in words is "six hundred ninety-four million, six hundred sixteen thousand, two hundred forty-five".