693998 has 8 divisors (see below), whose sum is σ = 1045008. Its totient is φ = 345664.

The previous prime is 693989. The next prime is 694019. The reversal of 693998 is 899396.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 693998.

It is an unprimeable number.

693998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215 + ... + 1197.

It is an arithmetic number, because the mean of its divisors is an integer number (130626).

2⁶⁹³⁹⁹⁸ is an apocalyptic number.

693998 is a deficient number, since it is larger than the sum of its proper divisors (351010).

693998 is a wasteful number, since it uses less digits than its factorization.

693998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338.

The product of its digits is 104976, while the sum is 44.

The square root of 693998 is about 833.0654236013. The cubic root of 693998 is about 88.5358999766.

The spelling of 693998 in words is "six hundred ninety-three thousand, nine hundred ninety-eight".