721713101 has 8 divisors (see below), whose sum is σ = 728280000. Its totient is φ = 715176000.

The previous prime is 721713071. The next prime is 721713103. The reversal of 721713101 is 101317127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-721713101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721713103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42725 + ... + 57173.

It is an arithmetic number, because the mean of its divisors is an integer number (91035000).

Almost surely, 2^721713101 is an apocalyptic number.

It is an amenable number.

721713101 is a deficient number, since it is larger than the sum of its proper divisors (6566899).

721713101 is a wasteful number, since it uses less digits than its factorization.

721713101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14899.

The product of its (nonzero) digits is 294, while the sum is 23.

The square root of 721713101 is about 26864.7185170439. The cubic root of 721713101 is about 896.9912287803.

The spelling of 721713101 in words is "seven hundred twenty-one million, seven hundred thirteen thousand, one hundred one".