715521312 has 72 divisors (see below), whose sum is σ = 2219752080. Its totient is φ = 216823680.

The previous prime is 715521223. The next prime is 715521319. The reversal of 715521312 is 213125517.

715521312 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 (72).

It is not an unprimeable number, because it can be changed into a prime (715521319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109762 + ... + 116097.

It is an arithmetic number, because the mean of its divisors is an integer number (30829890).

Almost surely, 2^715521312 is an apocalyptic number.

715521312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

715521312 is an abundant number, since it is smaller than the sum of its proper divisors (1504230768).

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

715521312 is a wasteful number, since it uses less digits than its factorization.

715521312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225886 (or 225875 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 715521312 is about 26749.2301197623. The cubic root of 715521312 is about 894.4186739188.

Adding to 715521312 its reverse (213125517), we get a palindrome (928646829).

The spelling of 715521312 in words is "seven hundred fifteen million, five hundred twenty-one thousand, three hundred twelve".