734689680 has 80 divisors (see below), whose sum is σ = 2411524224. Its totient is φ = 184391680.

The previous prime is 734689609. The next prime is 734689691. The reversal of 734689680 is 86986437.

734689680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85956 + ... + 94115.

Almost surely, 2^734689680 is an apocalyptic number.

It is an amenable number.

734689680 is an abundant number, since it is smaller than the sum of its proper divisors (1676834544).

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

734689680 is a wasteful number, since it uses less digits than its factorization.

734689680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180104 (or 180098 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 734689680 is about 27105.1596564197. The cubic root of 734689680 is about 902.3353669254.

The spelling of 734689680 in words is "seven hundred thirty-four million, six hundred eighty-nine thousand, six hundred eighty".