693887728 has 20 divisors (see below), whose sum is σ = 1345532680. Its totient is φ = 346653504.

The previous prime is 693887717. The next prime is 693887729. The reversal of 693887728 is 827788396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693887729) 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, 2263 + ... + 37321.

It is an arithmetic number, because the mean of its divisors is an integer number (67276634).

Almost surely, 2^693887728 is an apocalyptic number.

It is an amenable number.

693887728 is a deficient number, since it is larger than the sum of its proper divisors (651644952).

693887728 is a wasteful number, since it uses less digits than its factorization.

693887728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36304 (or 36298 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 58.

The square root of 693887728 is about 26341.7487650308. The cubic root of 693887728 is about 885.3121045881.

The spelling of 693887728 in words is "six hundred ninety-three million, eight hundred eighty-seven thousand, seven hundred twenty-eight".