64968163 has 12 divisors (see below), whose sum is σ = 74056440. Its totient is φ = 56811456.

The previous prime is 64968143. The next prime is 64968173. The reversal of 64968163 is 36186946.

It is a de Polignac number, because none of the positive numbers 2^k-64968163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64968103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6906 + ... + 13327.

It is an arithmetic number, because the mean of its divisors is an integer number (6171370).

Almost surely, 2^64968163 is an apocalyptic number.

64968163 is a deficient number, since it is larger than the sum of its proper divisors (9088277).

64968163 is a wasteful number, since it uses less digits than its factorization.

64968163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20278 (or 20265 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 64968163 is about 8060.2830595457. The cubic root of 64968163 is about 402.0069200891.

The spelling of 64968163 in words is "sixty-four million, nine hundred sixty-eight thousand, one hundred sixty-three".