731270064 has 80 divisors (see below), whose sum is σ = 2176114688. Its totient is φ = 207277056.

The previous prime is 731270053. The next prime is 731270069. The reversal of 731270064 is 460072137.

731270064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (731270069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34104 + ... + 51240.

Almost surely, 2^731270064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731270064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088057344).

731270064 is an abundant number, since it is smaller than the sum of its proper divisors (1444844624).

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

731270064 is a wasteful number, since it uses less digits than its factorization.

731270064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17282 (or 17276 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 731270064 is about 27042.0055469264. The cubic root of 731270064 is about 900.9332147263.

The spelling of 731270064 in words is "seven hundred thirty-one million, two hundred seventy thousand, sixty-four".