63355979 has 2 divisors, whose sum is σ = 63355980. Its totient is φ = 63355978.

The previous prime is 63355967. The next prime is 63355997. The reversal of 63355979 is 97955336.

Together with next prime (63355997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63355979 - 2¹⁶ = 63290443 is a prime.

It is not a weakly prime, because it can be changed into another prime (63355939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31677989 + 31677990.

It is an arithmetic number, because the mean of its divisors is an integer number (31677990).

Almost surely, 2^63355979 is an apocalyptic number.

63355979 is a deficient number, since it is larger than the sum of its proper divisors (1).

63355979 is an equidigital number, since it uses as much as digits as its factorization.

63355979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 765450, while the sum is 47.

The square root of 63355979 is about 7959.6469142796. The cubic root of 63355979 is about 398.6537637865.

The spelling of 63355979 in words is "sixty-three million, three hundred fifty-five thousand, nine hundred seventy-nine".