63775601 has 2 divisors, whose sum is σ = 63775602. Its totient is φ = 63775600.

The previous prime is 63775597. The next prime is 63775603. The reversal of 63775601 is 10657736.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 15376 = 7985^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 63775601 - 2² = 63775597 is a prime.

It is a super-2 number, since 2×63775601² = 8134654565822402, which contains 22 as substring.

Together with 63775603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63775603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31887800 + 31887801.

It is an arithmetic number, because the mean of its divisors is an integer number (31887801).

Almost surely, 2^63775601 is an apocalyptic number.

It is an amenable number.

63775601 is a deficient number, since it is larger than the sum of its proper divisors (1).

63775601 is an equidigital number, since it uses as much as digits as its factorization.

63775601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 63775601 is about 7985.9627472209. The cubic root of 63775601 is about 399.5319546308.

The spelling of 63775601 in words is "sixty-three million, seven hundred seventy-five thousand, six hundred one".