63965 has 8 divisors (see below), whose sum is σ = 83808. Its totient is φ = 46480.

The previous prime is 63949. The next prime is 63977. The reversal of 63965 is 56936.

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

It is not a de Polignac number, because 63965 - 2⁴ = 63949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527 + ... + 636.

It is an arithmetic number, because the mean of its divisors is an integer number (10476).

2⁶³⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

63965 is a deficient number, since it is larger than the sum of its proper divisors (19843).

63965 is a wasteful number, since it uses less digits than its factorization.

63965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179.

The product of its digits is 4860, while the sum is 29.

The square root of 63965 is about 252.9130285296. The cubic root of 63965 is about 39.9927070037.

Subtracting from 63965 its sum of digits (29), we obtain a palindrome (63936).

The spelling of 63965 in words is "sixty-three thousand, nine hundred sixty-five".