726724147 has 2 divisors, whose sum is σ = 726724148. Its totient is φ = 726724146.

The previous prime is 726724127. The next prime is 726724151. The reversal of 726724147 is 741427627.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726724147 is a prime.

It is not a weakly prime, because it can be changed into another prime (726724127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363362073 + 363362074.

It is an arithmetic number, because the mean of its divisors is an integer number (363362074).

Almost surely, 2^726724147 is an apocalyptic number.

726724147 is a deficient number, since it is larger than the sum of its proper divisors (1).

726724147 is an equidigital number, since it uses as much as digits as its factorization.

726724147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131712, while the sum is 40.

The square root of 726724147 is about 26957.8216293528. The cubic root of 726724147 is about 899.0624586699.

The spelling of 726724147 in words is "seven hundred twenty-six million, seven hundred twenty-four thousand, one hundred forty-seven".