63639067 has 2 divisors, whose sum is σ = 63639068. Its totient is φ = 63639066.

The previous prime is 63639049. The next prime is 63639083. The reversal of 63639067 is 76093636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63639067 - 2¹¹ = 63637019 is a prime.

It is not a weakly prime, because it can be changed into another prime (63639467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31819533 + 31819534.

It is an arithmetic number, because the mean of its divisors is an integer number (31819534).

Almost surely, 2^63639067 is an apocalyptic number.

63639067 is a deficient number, since it is larger than the sum of its proper divisors (1).

63639067 is an equidigital number, since it uses as much as digits as its factorization.

63639067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 63639067 is about 7977.4097926583. The cubic root of 63639067 is about 399.2466382560.

The spelling of 63639067 in words is "sixty-three million, six hundred thirty-nine thousand, sixty-seven".