699840000 has 400 divisors, whose sum is σ = 2620598640. Its totient is φ = 186624000.

The previous prime is 699839999. The next prime is 699840013. The reversal of 699840000 is 48996.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 139967998 + ... + 139968002.

Almost surely, 2^699840000 is an apocalyptic number.

699840000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310299320).

699840000 is an abundant number, since it is smaller than the sum of its proper divisors (1920758640).

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

699840000 is an frugal number, since it uses more digits than its factorization.

699840000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 699840000 is about 26454.4892220583. The cubic root of 699840000 is about 887.8363467590.

Adding to 699840000 its reverse (48996), we get a palindrome (699888996).

The spelling of 699840000 in words is "six hundred ninety-nine million, eight hundred forty thousand".