721337348 has 12 divisors (see below), whose sum is σ = 1296457932. Its totient is φ = 350920800.

The previous prime is 721337347. The next prime is 721337359. The reversal of 721337348 is 843733127.

It can be written as a sum of positive squares in 2 ways, for example, as 591559684 + 129777664 = 24322^2 + 11392^2 .

It is not an unprimeable number, because it can be changed into a prime (721337347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2436803 + ... + 2437098.

It is an arithmetic number, because the mean of its divisors is an integer number (108038161).

Almost surely, 2^721337348 is an apocalyptic number.

It is an amenable number.

721337348 is a deficient number, since it is larger than the sum of its proper divisors (575120584).

721337348 is a wasteful number, since it uses less digits than its factorization.

721337348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873942 (or 4873940 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 721337348 is about 26857.7241775993. The cubic root of 721337348 is about 896.8355317980.

The spelling of 721337348 in words is "seven hundred twenty-one million, three hundred thirty-seven thousand, three hundred forty-eight".