721471703 has 4 divisors (see below), whose sum is σ = 721572120. Its totient is φ = 721371288.

The previous prime is 721471697. The next prime is 721471727. The reversal of 721471703 is 307174127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307174127 = 13 ⋅23628779.

It is a cyclic number.

It is not a de Polignac number, because 721471703 - 2⁸ = 721471447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 721471703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721471733) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 38525 + ... + 54102.

It is an arithmetic number, because the mean of its divisors is an integer number (180393030).

Almost surely, 2^721471703 is an apocalyptic number.

721471703 is a deficient number, since it is larger than the sum of its proper divisors (100417).

721471703 is an equidigital number, since it uses as much as digits as its factorization.

721471703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100416.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 721471703 is about 26860.2252968958. The cubic root of 721471703 is about 896.8912093336.

The spelling of 721471703 in words is "seven hundred twenty-one million, four hundred seventy-one thousand, seven hundred three".