1684061008 has 60 divisors (see below), whose sum is σ = 3867291540. Its totient is φ = 708105216.

The previous prime is 1684060997. The next prime is 1684061011. The reversal of 1684061008 is 8001604861.

It can be written as a sum of positive squares in 2 ways, for example, as 1437319744 + 246741264 = 37912^2 + 15708^2 .

It is a super-2 number, since 2×1684061008² = 5672122957331952128, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 21288 + ... + 61816.

It is an arithmetic number, because the mean of its divisors is an integer number (64454859).

Almost surely, 2^1684061008 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 1684061008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1933645770).

1684061008 is an abundant number, since it is smaller than the sum of its proper divisors (2183230532).

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

1684061008 is a wasteful number, since it uses less digits than its factorization.

1684061008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40604 (or 40591 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1684061008 is about 41037.3123876308. The cubic root of 1684061008 is about 1189.7414894057.

Adding to 1684061008 its reverse (8001604861), we get a palindrome (9685665869).

The spelling of 1684061008 in words is "one billion, six hundred eighty-four million, sixty-one thousand, eight".