64963 has 4 divisors (see below), whose sum is σ = 65520. Its totient is φ = 64408.

The previous prime is 64951. The next prime is 64969. The reversal of 64963 is 36946.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 64963 - 2⁹ = 64451 is a prime.

It is a Duffinian number.

64963 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (64969) by changing a digit.

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, 28 + ... + 361.

It is an arithmetic number, because the mean of its divisors is an integer number (16380).

2⁶⁴⁹⁶³ is an apocalyptic number.

64963 is a deficient number, since it is larger than the sum of its proper divisors (557).

64963 is a wasteful number, since it uses less digits than its factorization.

64963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556.

The product of its digits is 3888, while the sum is 28.

The square root of 64963 is about 254.8784023804. The cubic root of 64963 is about 40.1996270685.

Subtracting from 64963 its product of digits (3888), we obtain a triangular number (61075 = T₃₄₉).

The spelling of 64963 in words is "sixty-four thousand, nine hundred sixty-three".