63964937 has 2 divisors, whose sum is σ = 63964938. Its totient is φ = 63964936.

The previous prime is 63964913. The next prime is 63964969. The reversal of 63964937 is 73946936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62663056 + 1301881 = 7916^2 + 1141^2 .

It is a cyclic number.

It is not a de Polignac number, because 63964937 - 2¹⁴ = 63948553 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 63964891 and 63964900.

It is not a weakly prime, because it can be changed into another prime (63964907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31982468 + 31982469.

It is an arithmetic number, because the mean of its divisors is an integer number (31982469).

Almost surely, 2^63964937 is an apocalyptic number.

It is an amenable number.

63964937 is a deficient number, since it is larger than the sum of its proper divisors (1).

63964937 is an equidigital number, since it uses as much as digits as its factorization.

63964937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 47.

The square root of 63964937 is about 7997.8082622679. The cubic root of 63964937 is about 399.9269387393.

The spelling of 63964937 in words is "sixty-three million, nine hundred sixty-four thousand, nine hundred thirty-seven".