730641817 has 2 divisors, whose sum is σ = 730641818. Its totient is φ = 730641816.

The previous prime is 730641811. The next prime is 730641859. The reversal of 730641817 is 718146037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 726248601 + 4393216 = 26949^2 + 2096^2 .

It is a cyclic number.

It is not a de Polignac number, because 730641817 - 2³ = 730641809 is a prime.

It is a super-2 number, since 2×730641817² = 1067674929498122978, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (730641811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365320908 + 365320909.

It is an arithmetic number, because the mean of its divisors is an integer number (365320909).

Almost surely, 2^730641817 is an apocalyptic number.

It is an amenable number.

730641817 is a deficient number, since it is larger than the sum of its proper divisors (1).

730641817 is an equidigital number, since it uses as much as digits as its factorization.

730641817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 730641817 is about 27030.3869191693. The cubic root of 730641817 is about 900.6751382719.

The spelling of 730641817 in words is "seven hundred thirty million, six hundred forty-one thousand, eight hundred seventeen".