730807057 has 2 divisors, whose sum is σ = 730807058. Its totient is φ = 730807056.

The previous prime is 730807019. The next prime is 730807061. The reversal of 730807057 is 750708037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 707613201 + 23193856 = 26601^2 + 4816^2 .

It is an emirp because it is prime and its reverse (750708037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 730807057 - 2⁷ = 730806929 is a prime.

It is a super-2 number, since 2×730807057² = 1068157909122002498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (730817057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365403528 + 365403529.

It is an arithmetic number, because the mean of its divisors is an integer number (365403529).

Almost surely, 2^730807057 is an apocalyptic number.

It is an amenable number.

730807057 is a deficient number, since it is larger than the sum of its proper divisors (1).

730807057 is an equidigital number, since it uses as much as digits as its factorization.

730807057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 730807057 is about 27033.4433063937. The cubic root of 730807057 is about 900.7430312478.

The spelling of 730807057 in words is "seven hundred thirty million, eight hundred seven thousand, fifty-seven".