684748590 has 16 divisors (see below), whose sum is σ = 1643396688. Its totient is φ = 182599616.

The previous prime is 684748579. The next prime is 684748591. The reversal of 684748590 is 95847486.

684748590 is digitally balanced in base 2, 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 (684748591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11412447 + ... + 11412506.

It is an arithmetic number, because the mean of its divisors is an integer number (102712293).

Almost surely, 2^684748590 is an apocalyptic number.

684748590 is an abundant number, since it is smaller than the sum of its proper divisors (958648098).

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

684748590 is a wasteful number, since it uses less digits than its factorization.

684748590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22824963.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 684748590 is about 26167.7012746630. The cubic root of 684748590 is about 881.4081235299.

The spelling of 684748590 in words is "six hundred eighty-four million, seven hundred forty-eight thousand, five hundred ninety".