63420403 has 2 divisors, whose sum is σ = 63420404. Its totient is φ = 63420402.

The previous prime is 63420377. The next prime is 63420431. The reversal of 63420403 is 30402436.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63420403 is a prime.

It is not a weakly prime, because it can be changed into another prime (63420433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31710201 + 31710202.

It is an arithmetic number, because the mean of its divisors is an integer number (31710202).

Almost surely, 2^63420403 is an apocalyptic number.

63420403 is a deficient number, since it is larger than the sum of its proper divisors (1).

63420403 is an equidigital number, since it uses as much as digits as its factorization.

63420403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 63420403 is about 7963.6927991981. The cubic root of 63420403 is about 398.7888426963.

Adding to 63420403 its reverse (30402436), we get a palindrome (93822839).

The spelling of 63420403 in words is "sixty-three million, four hundred twenty thousand, four hundred three".