690833284 has 24 divisors (see below), whose sum is σ = 1288246680. Its totient is φ = 323022336.

The previous prime is 690833279. The next prime is 690833287. The reversal of 690833284 is 482338096.

It can be written as a sum of positive squares in 4 ways, for example, as 246804100 + 444029184 = 15710^2 + 21072^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 690833284.

It is not an unprimeable number, because it can be changed into a prime (690833287) 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 7 ways as a sum of consecutive naturals, for example, 21679 + ... + 43030.

It is an arithmetic number, because the mean of its divisors is an integer number (53676945).

Almost surely, 2^690833284 is an apocalyptic number.

It is an amenable number.

690833284 is a deficient number, since it is larger than the sum of its proper divisors (597413396).

690833284 is a wasteful number, since it uses less digits than its factorization.

690833284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64887 (or 64885 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 690833284 is about 26283.7075771285. The cubic root of 690833284 is about 884.0111670477.

The spelling of 690833284 in words is "six hundred ninety million, eight hundred thirty-three thousand, two hundred eighty-four".