693385387 has 4 divisors (see below), whose sum is σ = 693538936. Its totient is φ = 693231840.

The previous prime is 693385351. The next prime is 693385397. The reversal of 693385387 is 783583396.

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 693385387 - 2²³ = 684996779 is a prime.

It is a super-3 number, since 3×693385387³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693385327) 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, 69789 + ... + 79102.

It is an arithmetic number, because the mean of its divisors is an integer number (173384734).

Almost surely, 2^693385387 is an apocalyptic number.

693385387 is a deficient number, since it is larger than the sum of its proper divisors (153549).

693385387 is a wasteful number, since it uses less digits than its factorization.

693385387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153548.

The product of its digits is 3265920, while the sum is 52.

The square root of 693385387 is about 26332.2119655755. The cubic root of 693385387 is about 885.0984120296.

The spelling of 693385387 in words is "six hundred ninety-three million, three hundred eighty-five thousand, three hundred eighty-seven".