63671449 has 2 divisors, whose sum is σ = 63671450. Its totient is φ = 63671448.

The previous prime is 63671423. The next prime is 63671453. The reversal of 63671449 is 94417636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57456400 + 6215049 = 7580^2 + 2493^2 .

It is a cyclic number.

It is not a de Polignac number, because 63671449 - 2¹¹ = 63669401 is a prime.

It is not a weakly prime, because it can be changed into another prime (63641449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31835724 + 31835725.

It is an arithmetic number, because the mean of its divisors is an integer number (31835725).

Almost surely, 2^63671449 is an apocalyptic number.

It is an amenable number.

63671449 is a deficient number, since it is larger than the sum of its proper divisors (1).

63671449 is an equidigital number, since it uses as much as digits as its factorization.

63671449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 63671449 is about 7979.4391406915. The cubic root of 63671449 is about 399.3143441116.

The spelling of 63671449 in words is "sixty-three million, six hundred seventy-one thousand, four hundred forty-nine".