63961147 has 2 divisors, whose sum is σ = 63961148. Its totient is φ = 63961146.

The previous prime is 63961141. The next prime is 63961151. The reversal of 63961147 is 74116936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63961147 - 2⁷ = 63961019 is a prime.

It is not a weakly prime, because it can be changed into another prime (63961141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31980573 + 31980574.

It is an arithmetic number, because the mean of its divisors is an integer number (31980574).

Almost surely, 2^63961147 is an apocalyptic number.

63961147 is a deficient number, since it is larger than the sum of its proper divisors (1).

63961147 is an equidigital number, since it uses as much as digits as its factorization.

63961147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 63961147 is about 7997.5713188442. The cubic root of 63961147 is about 399.9190398647.

The spelling of 63961147 in words is "sixty-three million, nine hundred sixty-one thousand, one hundred forty-seven".