721496348 has 24 divisors (see below), whose sum is σ = 1332019920. Its totient is φ = 341003520.

The previous prime is 721496317. The next prime is 721496351. The reversal of 721496348 is 843694127.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 721496299 and 721496308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24740 + ... + 45332.

It is an arithmetic number, because the mean of its divisors is an integer number (55500830).

Almost surely, 2^721496348 is an apocalyptic number.

It is an amenable number.

721496348 is a deficient number, since it is larger than the sum of its proper divisors (610523572).

721496348 is a wasteful number, since it uses less digits than its factorization.

721496348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21077 (or 21075 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 721496348 is about 26860.6840568143. The cubic root of 721496348 is about 896.9014216224.

The spelling of 721496348 in words is "seven hundred twenty-one million, four hundred ninety-six thousand, three hundred forty-eight".