1689504672 has 24 divisors (see below), whose sum is σ = 4434950016. Its totient is φ = 563168192.

The previous prime is 1689504667. The next prime is 1689504673. The reversal of 1689504672 is 2764059861.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1689504673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8799408 + ... + 8799599.

It is an arithmetic number, because the mean of its divisors is an integer number (184789584).

Almost surely, 2^1689504672 is an apocalyptic number.

1689504672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1689504672 is an abundant number, since it is smaller than the sum of its proper divisors (2745445344).

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

1689504672 is a wasteful number, since it uses less digits than its factorization.

1689504672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17599020 (or 17599012 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 1689504672 is about 41103.5846611947. The cubic root of 1689504672 is about 1191.0220421855.

The spelling of 1689504672 in words is "one billion, six hundred eighty-nine million, five hundred four thousand, six hundred seventy-two".