64663123 has 8 divisors (see below), whose sum is σ = 74211840. Its totient is φ = 55192200.

The previous prime is 64663073. The next prime is 64663139. The reversal of 64663123 is 32136646.

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

It is a de Polignac number, because none of the positive numbers 2^k-64663123 is a prime.

It is a super-2 number, since 2×64663123² = 8362638952226258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64663153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17653 + ... + 20998.

It is an arithmetic number, because the mean of its divisors is an integer number (9276480).

Almost surely, 2^64663123 is an apocalyptic number.

64663123 is a deficient number, since it is larger than the sum of its proper divisors (9548717).

64663123 is a wasteful number, since it uses less digits than its factorization.

64663123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38897.

The product of its digits is 15552, while the sum is 31.

The square root of 64663123 is about 8041.3383836274. The cubic root of 64663123 is about 401.3767621284.

Adding to 64663123 its reverse (32136646), we get a palindrome (96799769).

The spelling of 64663123 in words is "sixty-four million, six hundred sixty-three thousand, one hundred twenty-three".