63402947 has 2 divisors, whose sum is σ = 63402948. Its totient is φ = 63402946.

The previous prime is 63402931. The next prime is 63402949. The reversal of 63402947 is 74920436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63402947 - 2⁴ = 63402931 is a prime.

Together with 63402949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63402949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31701473 + 31701474.

It is an arithmetic number, because the mean of its divisors is an integer number (31701474).

Almost surely, 2^63402947 is an apocalyptic number.

63402947 is a deficient number, since it is larger than the sum of its proper divisors (1).

63402947 is an equidigital number, since it uses as much as digits as its factorization.

63402947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 63402947 is about 7962.5967498047. The cubic root of 63402947 is about 398.7522514392.

The spelling of 63402947 in words is "sixty-three million, four hundred two thousand, nine hundred forty-seven".