690380820944 has 20 divisors (see below), whose sum is σ = 1347235958880. Its totient is φ = 342707025120.

The previous prime is 690380820937. The next prime is 690380821069. The reversal of 690380820944 is 449028083096.

690380820944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×690380820944³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155209292 + ... + 155213739.

It is an arithmetic number, because the mean of its divisors is an integer number (67361797944).

Almost surely, 2^690380820944 is an apocalyptic number.

It is an amenable number.

690380820944 is a deficient number, since it is larger than the sum of its proper divisors (656855137936).

690380820944 is a wasteful number, since it uses less digits than its factorization.

690380820944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310423178 (or 310423172 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 690380820944 in words is "six hundred ninety billion, three hundred eighty million, eight hundred twenty thousand, nine hundred forty-four".