726906091 has 2 divisors, whose sum is σ = 726906092. Its totient is φ = 726906090.

The previous prime is 726906079. The next prime is 726906101. The reversal of 726906091 is 190609627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 726906091 - 2¹⁷ = 726775019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (726906071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363453045 + 363453046.

It is an arithmetic number, because the mean of its divisors is an integer number (363453046).

Almost surely, 2^726906091 is an apocalyptic number.

726906091 is a deficient number, since it is larger than the sum of its proper divisors (1).

726906091 is an equidigital number, since it uses as much as digits as its factorization.

726906091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 726906091 is about 26961.1960231737. The cubic root of 726906091 is about 899.1374827219.

The spelling of 726906091 in words is "seven hundred twenty-six million, nine hundred six thousand, ninety-one".