693426888 has 384 divisors, whose sum is σ = 2560896000. Its totient is φ = 164021760.

The previous prime is 693426829. The next prime is 693426893. The reversal of 693426888 is 888624396.

It is a Cunningham number, because it is equal to 26333²-1.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3054631 + ... + 3054857.

It is an arithmetic number, because the mean of its divisors is an integer number (6669000).

Almost surely, 2^693426888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 693426888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1280448000).

693426888 is an abundant number, since it is smaller than the sum of its proper divisors (1867469112).

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

693426888 is a wasteful number, since it uses less digits than its factorization.

693426888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 298 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 693426888 is about 26332.9999810124. Note that the first 4 decimals coincide. The cubic root of 693426888 is about 885.1160701925.

The spelling of 693426888 in words is "six hundred ninety-three million, four hundred twenty-six thousand, eight hundred eighty-eight".