721706150 has 48 divisors (see below), whose sum is σ = 1495618560. Its totient is φ = 256845600.

The previous prime is 721706147. The next prime is 721706171. The reversal of 721706150 is 51607127.

It is a Curzon number.

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, 11891 + ... + 39809.

It is an arithmetic number, because the mean of its divisors is an integer number (31158720).

Almost surely, 2^721706150 is an apocalyptic number.

721706150 is an abundant number, since it is smaller than the sum of its proper divisors (773912410).

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

721706150 is a wasteful number, since it uses less digits than its factorization.

721706150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27989 (or 27984 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 721706150 is about 26864.5891463093. The cubic root of 721706150 is about 896.9883490551.

The spelling of 721706150 in words is "seven hundred twenty-one million, seven hundred six thousand, one hundred fifty".