690376608 has 144 divisors (see below), whose sum is σ = 2080391040. Its totient is φ = 225110016.

The previous prime is 690376607. The next prime is 690376627. The reversal of 690376608 is 806673096.

690376608 is a `hidden beast` number, since 6 + 9 + 0 + 37 + 6 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (690376601) 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 23 ways as a sum of consecutive naturals, for example, 364528 + ... + 366416.

It is an arithmetic number, because the mean of its divisors is an integer number (14447160).

Almost surely, 2^690376608 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 690376608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040195520).

690376608 is an abundant number, since it is smaller than the sum of its proper divisors (1390014432).

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

690376608 is a wasteful number, since it uses less digits than its factorization.

690376608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1941 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 690376608 is about 26275.0187059876. The cubic root of 690376608 is about 883.8163319683.

The spelling of 690376608 in words is "six hundred ninety million, three hundred seventy-six thousand, six hundred eight".