694066445 has 16 divisors (see below), whose sum is σ = 843274800. Its totient is φ = 548352000.

The previous prime is 694066403. The next prime is 694066459. The reversal of 694066445 is 544660496.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 197177764 + 496888681 = 14042^2 + 22291^2 .

It is not a de Polignac number, because 694066445 - 2¹⁴ = 694050061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 694066396 and 694066405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225215 + ... + 228275.

It is an arithmetic number, because the mean of its divisors is an integer number (52704675).

Almost surely, 2^694066445 is an apocalyptic number.

It is an amenable number.

694066445 is a deficient number, since it is larger than the sum of its proper divisors (149208355).

694066445 is a wasteful number, since it uses less digits than its factorization.

694066445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616.

The product of its (nonzero) digits is 622080, while the sum is 44.

The square root of 694066445 is about 26345.1408233093. The cubic root of 694066445 is about 885.3881047512.

The spelling of 694066445 in words is "six hundred ninety-four million, sixty-six thousand, four hundred forty-five".