693887 has 4 divisors (see below), whose sum is σ = 724080. Its totient is φ = 663696.

The previous prime is 693881. The next prime is 693943. The reversal of 693887 is 788396.

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 693887 - 2⁴ = 693871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15062 + ... + 15107.

It is an arithmetic number, because the mean of its divisors is an integer number (181020).

2⁶⁹³⁸⁸⁷ is an apocalyptic number.

693887 is a deficient number, since it is larger than the sum of its proper divisors (30193).

693887 is a wasteful number, since it uses less digits than its factorization.

693887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30192.

The product of its digits is 72576, while the sum is 41.

The square root of 693887 is about 832.9987995189. The cubic root of 693887 is about 88.5311794976.

The spelling of 693887 in words is "six hundred ninety-three thousand, eight hundred eighty-seven".