698038057 has 2 divisors, whose sum is σ = 698038058. Its totient is φ = 698038056.

The previous prime is 698037983. The next prime is 698038069. The reversal of 698038057 is 750830896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638269696 + 59768361 = 25264^2 + 7731^2 .

It is a cyclic number.

It is not a de Polignac number, because 698038057 - 2⁷ = 698037929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698037998 and 698038016.

It is not a weakly prime, because it can be changed into another prime (698038087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349019028 + 349019029.

It is an arithmetic number, because the mean of its divisors is an integer number (349019029).

Almost surely, 2^698038057 is an apocalyptic number.

It is an amenable number.

698038057 is a deficient number, since it is larger than the sum of its proper divisors (1).

698038057 is an equidigital number, since it uses as much as digits as its factorization.

698038057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 698038057 is about 26420.4098567755. The cubic root of 698038057 is about 887.0736936121.

The spelling of 698038057 in words is "six hundred ninety-eight million, thirty-eight thousand, fifty-seven".