721345014 has 192 divisors, whose sum is σ = 1878589440. Its totient is φ = 205752960.

The previous prime is 721344979. The next prime is 721345039. The reversal of 721345014 is 410543127.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5679819 + ... + 5679945.

It is an arithmetic number, because the mean of its divisors is an integer number (9784320).

Almost surely, 2^721345014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 721345014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939294720).

721345014 is an abundant number, since it is smaller than the sum of its proper divisors (1157244426).

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

721345014 is a wasteful number, since it uses less digits than its factorization.

721345014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 721345014 is about 26857.8668922161. The cubic root of 721345014 is about 896.8387088214.

The spelling of 721345014 in words is "seven hundred twenty-one million, three hundred forty-five thousand, fourteen".