723730417 has 2 divisors, whose sum is σ = 723730418. Its totient is φ = 723730416.

The previous prime is 723730379. The next prime is 723730451. The reversal of 723730417 is 714037327.

It is an a-pointer prime, because the next prime (723730451) can be obtained adding 723730417 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365612641 + 358117776 = 19121^2 + 18924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723730417 is a prime.

It is not a weakly prime, because it can be changed into another prime (723730457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361865208 + 361865209.

It is an arithmetic number, because the mean of its divisors is an integer number (361865209).

Almost surely, 2^723730417 is an apocalyptic number.

It is an amenable number.

723730417 is a deficient number, since it is larger than the sum of its proper divisors (1).

723730417 is an equidigital number, since it uses as much as digits as its factorization.

723730417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 723730417 is about 26902.2381410915. The cubic root of 723730417 is about 897.8262011060.

The spelling of 723730417 in words is "seven hundred twenty-three million, seven hundred thirty thousand, four hundred seventeen".