63961161 has 8 divisors (see below), whose sum is σ = 93034464. Its totient is φ = 38764320.

The previous prime is 63961151. The next prime is 63961169. The reversal of 63961161 is 16116936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63961161 - 2⁹ = 63960649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1938217 = 63961161 / (6 + 3 + 9 + 6 + 1 + 1 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (63961169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969076 + ... + 969141.

It is an arithmetic number, because the mean of its divisors is an integer number (11629308).

Almost surely, 2^63961161 is an apocalyptic number.

It is an amenable number.

63961161 is a deficient number, since it is larger than the sum of its proper divisors (29073303).

63961161 is a wasteful number, since it uses less digits than its factorization.

63961161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938231.

The product of its digits is 5832, while the sum is 33.

The square root of 63961161 is about 7997.5721941099. The cubic root of 63961161 is about 399.9190690432.

It can be divided in two parts, 6396 and 1161, that added together give a palindrome (7557).

The spelling of 63961161 in words is "sixty-three million, nine hundred sixty-one thousand, one hundred sixty-one".