730817997 has 24 divisors (see below), whose sum is σ = 1220710176. Its totient is φ = 385485408.

The previous prime is 730817959. The next prime is 730817999. The reversal of 730817997 is 799718037.

It is a happy number.

It is not a de Polignac number, because 730817997 - 2¹⁶ = 730752461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730817999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189303 + ... + 193124.

It is an arithmetic number, because the mean of its divisors is an integer number (50862924).

Almost surely, 2^730817997 is an apocalyptic number.

It is an amenable number.

730817997 is a deficient number, since it is larger than the sum of its proper divisors (489892179).

730817997 is a wasteful number, since it uses less digits than its factorization.

730817997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382457 (or 382450 counting only the distinct ones).

The product of its (nonzero) digits is 666792, while the sum is 51.

The square root of 730817997 is about 27033.6456476000. The cubic root of 730817997 is about 900.7475258584.

The spelling of 730817997 in words is "seven hundred thirty million, eight hundred seventeen thousand, nine hundred ninety-seven".