726700621 has 8 divisors (see below), whose sum is σ = 731009664. Its totient is φ = 722404800.

The previous prime is 726700591. The next prime is 726700643. The reversal of 726700621 is 126007627.

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 726700621 - 2¹¹ = 726698573 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 (726701621) 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 7 ways as a sum of consecutive naturals, for example, 120156 + ... + 126058.

It is an arithmetic number, because the mean of its divisors is an integer number (91376208).

Almost surely, 2^726700621 is an apocalyptic number.

It is an amenable number.

726700621 is a deficient number, since it is larger than the sum of its proper divisors (4309043).

726700621 is a wasteful number, since it uses less digits than its factorization.

726700621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6611.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 726700621 is about 26957.3852775079. The cubic root of 726700621 is about 899.0527568816.

The spelling of 726700621 in words is "seven hundred twenty-six million, seven hundred thousand, six hundred twenty-one".