1689366672 has 160 divisors (see below), whose sum is σ = 5604998400. Its totient is φ = 477176832.

The previous prime is 1689366649. The next prime is 1689366677. The reversal of 1689366672 is 2766639861.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1689366677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265998 + ... + 272274.

It is an arithmetic number, because the mean of its divisors is an integer number (35031240).

Almost surely, 2^1689366672 is an apocalyptic number.

1689366672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1689366672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2802499200).

1689366672 is an abundant number, since it is smaller than the sum of its proper divisors (3915631728).

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

1689366672 is a wasteful number, since it uses less digits than its factorization.

1689366672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6390 (or 6378 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 1689366672 is about 41101.9059412091. The cubic root of 1689366672 is about 1190.9896134467.

The spelling of 1689366672 in words is "one billion, six hundred eighty-nine million, three hundred sixty-six thousand, six hundred seventy-two".