693998198 has 4 divisors (see below), whose sum is σ = 1040997300. Its totient is φ = 346999098.

The previous prime is 693998167. The next prime is 693998203. The reversal of 693998198 is 891899396.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 693998198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173499548 + ... + 173499551.

It is an arithmetic number, because the mean of its divisors is an integer number (260249325).

Almost surely, 2^693998198 is an apocalyptic number.

693998198 is a deficient number, since it is larger than the sum of its proper divisors (346999102).

693998198 is a wasteful number, since it uses less digits than its factorization.

693998198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346999101.

The product of its digits is 7558272, while the sum is 62.

The square root of 693998198 is about 26343.8455431245. The cubic root of 693998198 is about 885.3590839646.

The spelling of 693998198 in words is "six hundred ninety-three million, nine hundred ninety-eight thousand, one hundred ninety-eight".