693206387 has 4 divisors (see below), whose sum is σ = 694145160. Its totient is φ = 692267616.

The previous prime is 693206333. The next prime is 693206413. The reversal of 693206387 is 783602396.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 693206387 - 2¹² = 693202291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693206687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468278 + ... + 469755.

It is an arithmetic number, because the mean of its divisors is an integer number (173536290).

Almost surely, 2^693206387 is an apocalyptic number.

693206387 is a deficient number, since it is larger than the sum of its proper divisors (938773).

693206387 is an equidigital number, since it uses as much as digits as its factorization.

693206387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938772.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 693206387 is about 26328.8128672753. The cubic root of 693206387 is about 885.0222416660.

The spelling of 693206387 in words is "six hundred ninety-three million, two hundred six thousand, three hundred eighty-seven".