63965642 has 8 divisors (see below), whose sum is σ = 103329156. Its totient is φ = 29522592.

The previous prime is 63965621. The next prime is 63965653. The reversal of 63965642 is 24656936.

It can be written as a sum of positive squares in 2 ways, for example, as 63856081 + 109561 = 7991^2 + 331^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 63965642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230083 + ... + 1230134.

Almost surely, 2^63965642 is an apocalyptic number.

63965642 is a deficient number, since it is larger than the sum of its proper divisors (39363514).

63965642 is a wasteful number, since it uses less digits than its factorization.

63965642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460232.

The product of its digits is 233280, while the sum is 41.

The square root of 63965642 is about 7997.8523367214. The cubic root of 63965642 is about 399.9284080206.

The spelling of 63965642 in words is "sixty-three million, nine hundred sixty-five thousand, six hundred forty-two".