726375961 has 2 divisors, whose sum is σ = 726375962. Its totient is φ = 726375960.

The previous prime is 726375943. The next prime is 726375989. The reversal of 726375961 is 169573627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373687561 + 352688400 = 19331^2 + 18780^2 .

It is a cyclic number.

It is not a de Polignac number, because 726375961 - 2⁹ = 726375449 is a prime.

It is not a weakly prime, because it can be changed into another prime (726375931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363187980 + 363187981.

It is an arithmetic number, because the mean of its divisors is an integer number (363187981).

Almost surely, 2^726375961 is an apocalyptic number.

It is an amenable number.

726375961 is a deficient number, since it is larger than the sum of its proper divisors (1).

726375961 is an equidigital number, since it uses as much as digits as its factorization.

726375961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 46.

The square root of 726375961 is about 26951.3628783407. The cubic root of 726375961 is about 898.9188503190.

The spelling of 726375961 in words is "seven hundred twenty-six million, three hundred seventy-five thousand, nine hundred sixty-one".