721614450 has 96 divisors (see below), whose sum is σ = 1828008000. Its totient is φ = 188350720.

The previous prime is 721614431. The next prime is 721614461. The reversal of 721614450 is 54416127.

721614450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1854856 + ... + 1855244.

It is an arithmetic number, because the mean of its divisors is an integer number (19041750).

Almost surely, 2^721614450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 721614450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914004000).

721614450 is an abundant number, since it is smaller than the sum of its proper divisors (1106393550).

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

721614450 is a wasteful number, since it uses less digits than its factorization.

721614450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 721614450 is about 26862.8823844352. The cubic root of 721614450 is about 896.9503569926.

The spelling of 721614450 in words is "seven hundred twenty-one million, six hundred fourteen thousand, four hundred fifty".