721327104 has 264 divisors, whose sum is σ = 2253206592. Its totient is φ = 221675520.

The previous prime is 721327093. The next prime is 721327129. The reversal of 721327104 is 401723127.

It is a happy number.

It is a zygodrome in base 4.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 8690647 + ... + 8690729.

Almost surely, 2^721327104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 721327104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126603296).

721327104 is an abundant number, since it is smaller than the sum of its proper divisors (1531879488).

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

721327104 is a wasteful number, since it uses less digits than its factorization.

721327104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 721327104 is about 26857.5334682841. The cubic root of 721327104 is about 896.8312863380.

The spelling of 721327104 in words is "seven hundred twenty-one million, three hundred twenty-seven thousand, one hundred four".