63965956 has 12 divisors (see below), whose sum is σ = 112422492. Its totient is φ = 31845248.

The previous prime is 63965953. The next prime is 63965981. The reversal of 63965956 is 65956936.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30140100 + 33825856 = 5490^2 + 5816^2 .

It is not an unprimeable number, because it can be changed into a prime (63965953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33385 + ... + 35248.

It is an arithmetic number, because the mean of its divisors is an integer number (9368541).

Almost surely, 2^63965956 is an apocalyptic number.

It is an amenable number.

63965956 is a deficient number, since it is larger than the sum of its proper divisors (48456536).

63965956 is a wasteful number, since it uses less digits than its factorization.

63965956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68870 (or 68868 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 49.

The square root of 63965956 is about 7997.8719669672. The cubic root of 63965956 is about 399.9290624204.

The spelling of 63965956 in words is "sixty-three million, nine hundred sixty-five thousand, nine hundred fifty-six".