63399857 has 2 divisors, whose sum is σ = 63399858. Its totient is φ = 63399856.

The previous prime is 63399841. The next prime is 63399863. The reversal of 63399857 is 75899336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37957921 + 25441936 = 6161^2 + 5044^2 .

It is a cyclic number.

It is not a de Polignac number, because 63399857 - 2⁴ = 63399841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63399877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31699928 + 31699929.

It is an arithmetic number, because the mean of its divisors is an integer number (31699929).

Almost surely, 2^63399857 is an apocalyptic number.

It is an amenable number.

63399857 is a deficient number, since it is larger than the sum of its proper divisors (1).

63399857 is an equidigital number, since it uses as much as digits as its factorization.

63399857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 63399857 is about 7962.4027152613. The cubic root of 63399857 is about 398.7457734834.

The spelling of 63399857 in words is "sixty-three million, three hundred ninety-nine thousand, eight hundred fifty-seven".