715721370 has 128 divisors (see below), whose sum is σ = 2122606080. Its totient is φ = 150405120.

The previous prime is 715721341. The next prime is 715721407. The reversal of 715721370 is 73127517.

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1116250 + ... + 1116890.

It is an arithmetic number, because the mean of its divisors is an integer number (16582860).

Almost surely, 2^715721370 is an apocalyptic number.

715721370 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 715721370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061303040).

715721370 is an abundant number, since it is smaller than the sum of its proper divisors (1406884710).

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

715721370 is a wasteful number, since it uses less digits than its factorization.

715721370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 715721370 is about 26752.9693679038. The cubic root of 715721370 is about 894.5020252386.

Adding to 715721370 its reverse (73127517), we get a palindrome (788848887).

The spelling of 715721370 in words is "seven hundred fifteen million, seven hundred twenty-one thousand, three hundred seventy".