63671653 has 2 divisors, whose sum is σ = 63671654. Its totient is φ = 63671652.

The previous prime is 63671651. The next prime is 63671683. The reversal of 63671653 is 35617636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62995969 + 675684 = 7937^2 + 822^2 .

It is a cyclic number.

It is not a de Polignac number, because 63671653 - 2¹ = 63671651 is a prime.

Together with 63671651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63671651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31835826 + 31835827.

It is an arithmetic number, because the mean of its divisors is an integer number (31835827).

Almost surely, 2^63671653 is an apocalyptic number.

It is an amenable number.

63671653 is a deficient number, since it is larger than the sum of its proper divisors (1).

63671653 is an equidigital number, since it uses as much as digits as its factorization.

63671653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 37.

The square root of 63671653 is about 7979.4519235346. The cubic root of 63671653 is about 399.3147705719.

The spelling of 63671653 in words is "sixty-three million, six hundred seventy-one thousand, six hundred fifty-three".