699400000 has 168 divisors, whose sum is σ = 1875114360. Its totient is φ = 257280000.

The previous prime is 699399977. The next prime is 699400001. The reversal of 699400000 is 4996.

It can be written as a sum of positive squares in 12 ways, for example, as 582932736 + 116467264 = 24144^2 + 10792^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699400001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2599866 + ... + 2600134.

It is an arithmetic number, because the mean of its divisors is an integer number (11161395).

Almost surely, 2^699400000 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 699400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937557180).

699400000 is an abundant number, since it is smaller than the sum of its proper divisors (1175714360).

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

699400000 is an equidigital number, since it uses as much as digits as its factorization.

699400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 699400000 is about 26446.1717456421. The cubic root of 699400000 is about 887.6502423685.

Adding to 699400000 its reverse (4996), we get a palindrome (699404996).

The spelling of 699400000 in words is "six hundred ninety-nine million, four hundred thousand".