63689161 has 2 divisors, whose sum is σ = 63689162. Its totient is φ = 63689160.

The previous prime is 63689111. The next prime is 63689177. The reversal of 63689161 is 16198636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62410000 + 1279161 = 7900^2 + 1131^2 .

It is a cyclic number.

It is not a de Polignac number, because 63689161 - 2²⁵ = 30134729 is a prime.

It is not a weakly prime, because it can be changed into another prime (63689111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31844580 + 31844581.

It is an arithmetic number, because the mean of its divisors is an integer number (31844581).

Almost surely, 2^63689161 is an apocalyptic number.

It is an amenable number.

63689161 is a deficient number, since it is larger than the sum of its proper divisors (1).

63689161 is an equidigital number, since it uses as much as digits as its factorization.

63689161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 63689161 is about 7980.5489159581. The cubic root of 63689161 is about 399.3513675083.

The spelling of 63689161 in words is "sixty-three million, six hundred eighty-nine thousand, one hundred sixty-one".