726701663 has 2 divisors, whose sum is σ = 726701664. Its totient is φ = 726701662.

The previous prime is 726701653. The next prime is 726701693. The reversal of 726701663 is 366107627.

It is a weak prime.

It is an emirp because it is prime and its reverse (366107627) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726701663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726701653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363350831 + 363350832.

It is an arithmetic number, because the mean of its divisors is an integer number (363350832).

Almost surely, 2^726701663 is an apocalyptic number.

726701663 is a deficient number, since it is larger than the sum of its proper divisors (1).

726701663 is an equidigital number, since it uses as much as digits as its factorization.

726701663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 726701663 is about 26957.4046043012. The cubic root of 726701663 is about 899.0531865920.

The spelling of 726701663 in words is "seven hundred twenty-six million, seven hundred one thousand, six hundred sixty-three".