693888820 has 12 divisors (see below), whose sum is σ = 1457166564. Its totient is φ = 277555520.

The previous prime is 693888803. The next prime is 693888823. The reversal of 693888820 is 28888396.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 75968656 + 617920164 = 8716^2 + 24858^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693888823) 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 3 ways as a sum of consecutive naturals, for example, 17347201 + ... + 17347240.

It is an arithmetic number, because the mean of its divisors is an integer number (121430547).

Almost surely, 2^693888820 is an apocalyptic number.

It is an amenable number.

693888820 is an abundant number, since it is smaller than the sum of its proper divisors (763277744).

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

693888820 is a wasteful number, since it uses less digits than its factorization.

693888820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34694450 (or 34694448 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 52.

The square root of 693888820 is about 26341.7694925759. The cubic root of 693888820 is about 885.3125690053.

The spelling of 693888820 in words is "six hundred ninety-three million, eight hundred eighty-eight thousand, eight hundred twenty".