63278923 has 2 divisors, whose sum is σ = 63278924. Its totient is φ = 63278922.

The previous prime is 63278869. The next prime is 63278927. The reversal of 63278923 is 32987236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63278923 - 2¹³ = 63270731 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (63278927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31639461 + 31639462.

It is an arithmetic number, because the mean of its divisors is an integer number (31639462).

Almost surely, 2^63278923 is an apocalyptic number.

63278923 is a deficient number, since it is larger than the sum of its proper divisors (1).

63278923 is an equidigital number, since it uses as much as digits as its factorization.

63278923 is an odious number, because the sum of its binary digits is odd.

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

The square root of 63278923 is about 7954.8050258947. The cubic root of 63278923 is about 398.4920788276.

The spelling of 63278923 in words is "sixty-three million, two hundred seventy-eight thousand, nine hundred twenty-three".