693423965898 has 12 divisors (see below), whose sum is σ = 1502418592818. Its totient is φ = 231141321960.

The previous prime is 693423965893. The next prime is 693423965903. The reversal of 693423965898 is 898569324396.

693423965898 is a `hidden beast` number, since 6 + 9 + 3 + 4 + 2 + 39 + 6 + 589 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (693423965893) and next prime (693423965903).

It can be written as a sum of positive squares in only one way, i.e., 499231272969 + 194192692929 = 706563^2 + 440673^2 .

It is not an unprimeable number, because it can be changed into a prime (693423965891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19261776813 + ... + 19261776848.

Almost surely, 2^693423965898 is an apocalyptic number.

693423965898 is an abundant number, since it is smaller than the sum of its proper divisors (808994626920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

693423965898 is a wasteful number, since it uses less digits than its factorization.

693423965898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38523553669 (or 38523553666 counting only the distinct ones).

The product of its digits is 604661760, while the sum is 72.

The spelling of 693423965898 in words is "six hundred ninety-three billion, four hundred twenty-three million, nine hundred sixty-five thousand, eight hundred ninety-eight".