726690654749 has 2 divisors, whose sum is σ = 726690654750. Its totient is φ = 726690654748.

The previous prime is 726690654727. The next prime is 726690654763. The reversal of 726690654749 is 947456096627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 637271713849 + 89418940900 = 798293^2 + 299030^2 .

It is a cyclic number.

It is not a de Polignac number, because 726690654749 - 2¹⁶ = 726690589213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726690654709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363345327374 + 363345327375.

It is an arithmetic number, because the mean of its divisors is an integer number (363345327375).

Almost surely, 2^726690654749 is an apocalyptic number.

It is an amenable number.

726690654749 is a deficient number, since it is larger than the sum of its proper divisors (1).

726690654749 is an equidigital number, since it uses as much as digits as its factorization.

726690654749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137168640, while the sum is 65.

The spelling of 726690654749 in words is "seven hundred twenty-six billion, six hundred ninety million, six hundred fifty-four thousand, seven hundred forty-nine".