693685669 has 4 divisors (see below), whose sum is σ = 701479980. Its totient is φ = 685891360.

The previous prime is 693685661. The next prime is 693685673. The reversal of 693685669 is 966586396.

It is a happy number.

693685669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 407636100 + 286049569 = 20190^2 + 16913^2 .

It is a cyclic number.

It is not a de Polignac number, because 693685669 - 2³ = 693685661 is a prime.

It is a super-2 number, since 2×693685669² = 962399614751955122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693685661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3897022 + ... + 3897199.

It is an arithmetic number, because the mean of its divisors is an integer number (175369995).

Almost surely, 2^693685669 is an apocalyptic number.

It is an amenable number.

693685669 is a deficient number, since it is larger than the sum of its proper divisors (7794311).

693685669 is an equidigital number, since it uses as much as digits as its factorization.

693685669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7794310.

The product of its digits is 12597120, while the sum is 58.

The square root of 693685669 is about 26337.9131481596. The cubic root of 693685669 is about 885.2261624210.

The spelling of 693685669 in words is "six hundred ninety-three million, six hundred eighty-five thousand, six hundred sixty-nine".