63387109 has 2 divisors, whose sum is σ = 63387110. Its totient is φ = 63387108.

The previous prime is 63387083. The next prime is 63387119. The reversal of 63387109 is 90178336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63250209 + 136900 = 7953^2 + 370^2 .

It is a cyclic number.

It is not a de Polignac number, because 63387109 - 2²³ = 54998501 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63387119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31693554 + 31693555.

It is an arithmetic number, because the mean of its divisors is an integer number (31693555).

Almost surely, 2^63387109 is an apocalyptic number.

It is an amenable number.

63387109 is a deficient number, since it is larger than the sum of its proper divisors (1).

63387109 is an equidigital number, since it uses as much as digits as its factorization.

63387109 is an evil number, because the sum of its binary digits is even.

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

The square root of 63387109 is about 7961.6021628815. The cubic root of 63387109 is about 398.7190460211.

The spelling of 63387109 in words is "sixty-three million, three hundred eighty-seven thousand, one hundred nine".