726245322661 has 8 divisors (see below), whose sum is σ = 739962078624. Its totient is φ = 712529085840.

The previous prime is 726245322659. The next prime is 726245322697. The reversal of 726245322661 is 166223542627.

726245322661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 726245322661 - 2¹ = 726245322659 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 (726245328661) 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, 3816990 + ... + 4002736.

It is an arithmetic number, because the mean of its divisors is an integer number (92495259828).

Almost surely, 2^726245322661 is an apocalyptic number.

It is an amenable number.

726245322661 is a deficient number, since it is larger than the sum of its proper divisors (13716755963).

726245322661 is a wasteful number, since it uses less digits than its factorization.

726245322661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259571.

The product of its digits is 1451520, while the sum is 46.

The spelling of 726245322661 in words is "seven hundred twenty-six billion, two hundred forty-five million, three hundred twenty-two thousand, six hundred sixty-one".