689874720 has 48 divisors (see below), whose sum is σ = 2173106880. Its totient is φ = 183966464.

The previous prime is 689874697. The next prime is 689874721. The reversal of 689874720 is 27478986.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (689874721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 718140 + ... + 719099.

It is an arithmetic number, because the mean of its divisors is an integer number (45273060).

Almost surely, 2^689874720 is an apocalyptic number.

689874720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689874720 is an abundant number, since it is smaller than the sum of its proper divisors (1483232160).

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

689874720 is a wasteful number, since it uses less digits than its factorization.

689874720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437257 (or 1437249 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 689874720 is about 26265.4663008293. The cubic root of 689874720 is about 883.6021086301.

It can be divided in two parts, 6898 and 74720, that added together give a palindrome (81618).

The spelling of 689874720 in words is "six hundred eighty-nine million, eight hundred seventy-four thousand, seven hundred twenty".