1684650768 has 40 divisors (see below), whose sum is σ = 4608017568. Its totient is φ = 528517632.

The previous prime is 1684650767. The next prime is 1684650787. The reversal of 1684650768 is 8670564861.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1684650768.

It is not an unprimeable number, because it can be changed into a prime (1684650761) 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, 1031446 + ... + 1033077.

Almost surely, 2^1684650768 is an apocalyptic number.

It is an amenable number.

1684650768 is an abundant number, since it is smaller than the sum of its proper divisors (2923366800).

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

1684650768 is a wasteful number, since it uses less digits than its factorization.

1684650768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064551 (or 2064545 counting only the distinct ones).

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

The square root of 1684650768 is about 41044.4974143916. The cubic root of 1684650768 is about 1189.8803561185.

The spelling of 1684650768 in words is "one billion, six hundred eighty-four million, six hundred fifty thousand, seven hundred sixty-eight".