695667321 has 12 divisors (see below), whose sum is σ = 1014073060. Its totient is φ = 459522720.

The previous prime is 695667299. The next prime is 695667331. The reversal of 695667321 is 123766596.

695667321 is a `hidden beast` number, since 69 + 566 + 7 + 3 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 370370025 + 325297296 = 19245^2 + 18036^2 .

It is not a de Polignac number, because 695667321 - 2¹⁵ = 695634553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (695667331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353590 + ... + 355551.

Almost surely, 2^695667321 is an apocalyptic number.

It is an amenable number.

695667321 is a deficient number, since it is larger than the sum of its proper divisors (318405739).

695667321 is a wasteful number, since it uses less digits than its factorization.

695667321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709256 (or 709253 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 695667321 is about 26375.5060804528. The cubic root of 695667321 is about 886.0683029380.

The spelling of 695667321 in words is "six hundred ninety-five million, six hundred sixty-seven thousand, three hundred twenty-one".