690841824 has 96 divisors (see below), whose sum is σ = 1937738880. Its totient is φ = 214866432.

The previous prime is 690841787. The next prime is 690841831. The reversal of 690841824 is 428148096.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 119382 + ... + 125034.

It is an arithmetic number, because the mean of its divisors is an integer number (20184780).

Almost surely, 2^690841824 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 690841824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968869440).

690841824 is an abundant number, since it is smaller than the sum of its proper divisors (1246897056).

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

690841824 is a wasteful number, since it uses less digits than its factorization.

690841824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752 (or 5744 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 690841824 is about 26283.8700346810. The cubic root of 690841824 is about 884.0148097135.

The spelling of 690841824 in words is "six hundred ninety million, eight hundred forty-one thousand, eight hundred twenty-four".