1684696064 has 22 divisors (see below), whose sum is σ = 3367748964. Its totient is φ = 842347520.

The previous prime is 1684696051. The next prime is 1684696067. The reversal of 1684696064 is 4606964861.

It is not an unprimeable number, because it can be changed into a prime (1684696067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821582 + ... + 823629.

Almost surely, 2^1684696064 is an apocalyptic number.

It is an amenable number.

1684696064 is a deficient number, since it is larger than the sum of its proper divisors (1683052900).

1684696064 is an equidigital number, since it uses as much as digits as its factorization.

1684696064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645231 (or 1645213 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The square root of 1684696064 is about 41045.0492020658. The cubic root of 1684696064 is about 1189.8910203145.

The spelling of 1684696064 in words is "one billion, six hundred eighty-four million, six hundred ninety-six thousand, sixty-four".