693945 has 24 divisors (see below), whose sum is σ = 1375296. Its totient is φ = 317088.

The previous prime is 693943. The next prime is 693961. The reversal of 693945 is 549396.

It is not a de Polignac number, because 693945 - 2¹ = 693943 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (693943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 787 + ... + 1416.

It is an arithmetic number, because the mean of its divisors is an integer number (57304).

2⁶⁹³⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

693945 is a deficient number, since it is larger than the sum of its proper divisors (681351).

693945 is a wasteful number, since it uses less digits than its factorization.

693945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221 (or 2218 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 693945 is about 833.0336127672. The cubic root of 693945 is about 88.5336461170.

The spelling of 693945 in words is "six hundred ninety-three thousand, nine hundred forty-five".