726949723 has 2 divisors, whose sum is σ = 726949724. Its totient is φ = 726949722.

The previous prime is 726949711. The next prime is 726949739. The reversal of 726949723 is 327949627.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726949723 is a prime.

It is not a weakly prime, because it can be changed into another prime (726949763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363474861 + 363474862.

It is an arithmetic number, because the mean of its divisors is an integer number (363474862).

Almost surely, 2^726949723 is an apocalyptic number.

726949723 is a deficient number, since it is larger than the sum of its proper divisors (1).

726949723 is an equidigital number, since it uses as much as digits as its factorization.

726949723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 49.

The square root of 726949723 is about 26962.0051739480. The cubic root of 726949723 is about 899.1554723826.

The spelling of 726949723 in words is "seven hundred twenty-six million, nine hundred forty-nine thousand, seven hundred twenty-three".