721674470 has 16 divisors (see below), whose sum is σ = 1417106448. Its totient is φ = 262427040.

The previous prime is 721674439. The next prime is 721674491. The reversal of 721674470 is 74476127.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3280229 + ... + 3280448.

It is an arithmetic number, because the mean of its divisors is an integer number (88569153).

Almost surely, 2^721674470 is an apocalyptic number.

721674470 is a deficient number, since it is larger than the sum of its proper divisors (695431978).

721674470 is a wasteful number, since it uses less digits than its factorization.

721674470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6560695.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 721674470 is about 26863.9995160810. Note that the first 3 decimals coincide. The cubic root of 721674470 is about 896.9752241350.

The spelling of 721674470 in words is "seven hundred twenty-one million, six hundred seventy-four thousand, four hundred seventy".