63671121 has 6 divisors (see below), whose sum is σ = 91969410. Its totient is φ = 42447408.

The previous prime is 63671081. The next prime is 63671123. The reversal of 63671121 is 12117636.

63671121 is a `hidden beast` number, since 636 + 7 + 1 + 1 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48108096 + 15563025 = 6936^2 + 3945^2 .

It is not a de Polignac number, because 63671121 - 2⁶ = 63671057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63671123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3537276 + ... + 3537293.

It is an arithmetic number, because the mean of its divisors is an integer number (15328235).

Almost surely, 2^63671121 is an apocalyptic number.

It is an amenable number.

63671121 is a deficient number, since it is larger than the sum of its proper divisors (28298289).

63671121 is a wasteful number, since it uses less digits than its factorization.

63671121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074575 (or 7074572 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 63671121 is about 7979.4185878421. The cubic root of 63671121 is about 399.3136584283.

Adding to 63671121 its reverse (12117636), we get a palindrome (75788757).

The spelling of 63671121 in words is "sixty-three million, six hundred seventy-one thousand, one hundred twenty-one".