724002101 has 8 divisors (see below), whose sum is σ = 747771480. Its totient is φ = 700607232.

The previous prime is 724002061. The next prime is 724002133. The reversal of 724002101 is 101200427.

It can be written as a sum of positive squares in 4 ways, for example, as 213919876 + 510082225 = 14626^2 + 22585^2 .

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-724002101 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 724002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724052101) 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, 89696 + ... + 97433.

It is an arithmetic number, because the mean of its divisors is an integer number (93471435).

Almost surely, 2^724002101 is an apocalyptic number.

It is an amenable number.

724002101 is a deficient number, since it is larger than the sum of its proper divisors (23769379).

724002101 is a wasteful number, since it uses less digits than its factorization.

724002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187255.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 724002101 is about 26907.2871356441. The cubic root of 724002101 is about 897.9385332174.

Adding to 724002101 its reverse (101200427), we get a palindrome (825202528).

The spelling of 724002101 in words is "seven hundred twenty-four million, two thousand, one hundred one".