63887387 has 2 divisors, whose sum is σ = 63887388. Its totient is φ = 63887386.

The previous prime is 63887371. The next prime is 63887423. The reversal of 63887387 is 78378836.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63887387 - 2⁴ = 63887371 is a prime.

It is not a weakly prime, because it can be changed into another prime (63887287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31943693 + 31943694.

It is an arithmetic number, because the mean of its divisors is an integer number (31943694).

Almost surely, 2^63887387 is an apocalyptic number.

63887387 is a deficient number, since it is larger than the sum of its proper divisors (1).

63887387 is an equidigital number, since it uses as much as digits as its factorization.

63887387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 50.

The square root of 63887387 is about 7992.9585886579. The cubic root of 63887387 is about 399.7652518435.

The spelling of 63887387 in words is "sixty-three million, eight hundred eighty-seven thousand, three hundred eighty-seven".