690404000 has 384 divisors, whose sum is σ = 2139830784. Its totient is φ = 215040000.

The previous prime is 690403993. The next prime is 690404003. The reversal of 690404000 is 404096.

690404000 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690404003) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 9723965 + ... + 9724035.

It is an arithmetic number, because the mean of its divisors is an integer number (5572476).

Almost surely, 2^690404000 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 690404000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069915392).

690404000 is an abundant number, since it is smaller than the sum of its proper divisors (1449426784).

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

690404000 is a wasteful number, since it uses less digits than its factorization.

690404000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 690404000 is about 26275.5399563929. The cubic root of 690404000 is about 883.8280208429.

Adding to 690404000 its reverse (404096), we get a palindrome (690808096).

The spelling of 690404000 in words is "six hundred ninety million, four hundred four thousand".