730857897 has 160 divisors (see below), whose sum is σ = 1477833984. Its totient is φ = 348364800.

The previous prime is 730857893. The next prime is 730857899. The reversal of 730857897 is 798758037.

It is not a de Polignac number, because 730857897 - 2² = 730857893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (730857893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6467713 + ... + 6467825.

Almost surely, 2^730857897 is an apocalyptic number.

730857897 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

730857897 is an abundant number, since it is smaller than the sum of its proper divisors (746976087).

730857897 is a wasteful number, since it uses less digits than its factorization.

730857897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The square root of 730857897 is about 27034.3836068071. The cubic root of 730857897 is about 900.7639180712.

The spelling of 730857897 in words is "seven hundred thirty million, eight hundred fifty-seven thousand, eight hundred ninety-seven".