693394286209 has 3 divisors (see below), whose sum is σ = 693395118913. Its totient is φ = 693393453506.

The previous prime is 693394286161. The next prime is 693394286269. The reversal of 693394286209 is 902682493396.

The square root of 693394286209 is 832703.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 693394286209 - 2²¹ = 693392189057 is a prime.

It is a super-2 number, since 2×693394286209² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693394286269) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 416352 + ... + 1249054.

Almost surely, 2^693394286209 is an apocalyptic number.

693394286209 is the 832703-rd square number.

693394286209 is the 416352-nd centered octagonal number.

It is an amenable number.

693394286209 is a deficient number, since it is larger than the sum of its proper divisors (832704).

693394286209 is an frugal number, since it uses more digits than its factorization.

693394286209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665406 (or 832703 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 61.

The spelling of 693394286209 in words is "six hundred ninety-three billion, three hundred ninety-four million, two hundred eighty-six thousand, two hundred nine".