721375058 has 8 divisors (see below), whose sum is σ = 1119375180. Its totient is φ = 348250000.

The previous prime is 721375043. The next prime is 721375091. The reversal of 721375058 is 850573127.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 660644209 + 60730849 = 25703^2 + 7793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6218693 + ... + 6218808.

Almost surely, 2^721375058 is an apocalyptic number.

721375058 is a deficient number, since it is larger than the sum of its proper divisors (398000122).

721375058 is a wasteful number, since it uses less digits than its factorization.

721375058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12437532.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 721375058 is about 26858.4262011012. The cubic root of 721375058 is about 896.8511597511.

The spelling of 721375058 in words is "seven hundred twenty-one million, three hundred seventy-five thousand, fifty-eight".