63872947 has 2 divisors, whose sum is σ = 63872948. Its totient is φ = 63872946.

The previous prime is 63872929. The next prime is 63872951. The reversal of 63872947 is 74927836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63872947 - 2²³ = 55484339 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 63872897 and 63872906.

It is not a weakly prime, because it can be changed into another prime (63872047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31936473 + 31936474.

It is an arithmetic number, because the mean of its divisors is an integer number (31936474).

Almost surely, 2^63872947 is an apocalyptic number.

63872947 is a deficient number, since it is larger than the sum of its proper divisors (1).

63872947 is an equidigital number, since it uses as much as digits as its factorization.

63872947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 63872947 is about 7992.0552425518. The cubic root of 63872947 is about 399.7351308996.

The spelling of 63872947 in words is "sixty-three million, eight hundred seventy-two thousand, nine hundred forty-seven".