368663857 has 2 divisors, whose sum is σ = 368663858. Its totient is φ = 368663856.

The previous prime is 368663843. The next prime is 368663861. The reversal of 368663857 is 758366863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353289616 + 15374241 = 18796^2 + 3921^2 .

It is an emirp because it is prime and its reverse (758366863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 368663857 - 2²³ = 360275249 is a prime.

It is not a weakly prime, because it can be changed into another prime (368663357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184331928 + 184331929.

It is an arithmetic number, because the mean of its divisors is an integer number (184331929).

Almost surely, 2^368663857 is an apocalyptic number.

It is an amenable number.

368663857 is a deficient number, since it is larger than the sum of its proper divisors (1).

368663857 is an equidigital number, since it uses as much as digits as its factorization.

368663857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 52.

The square root of 368663857 is about 19200.6212659903. The cubic root of 368663857 is about 717.0402268344.

It can be divided in two parts, 368 and 663857, that added together give a square (664225 = 815²).

The spelling of 368663857 in words is "three hundred sixty-eight million, six hundred sixty-three thousand, eight hundred fifty-seven".