64500123 has 8 divisors (see below), whose sum is σ = 86065168. Its totient is φ = 42967584.

The previous prime is 64500097. The next prime is 64500143. The reversal of 64500123 is 32100546.

It is a happy number.

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-64500123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64500123.

It is not an unprimeable number, because it can be changed into a prime (64500143) 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, 3040 + ... + 11757.

It is an arithmetic number, because the mean of its divisors is an integer number (10758146).

Almost surely, 2^64500123 is an apocalyptic number.

64500123 is a deficient number, since it is larger than the sum of its proper divisors (21565045).

64500123 is a wasteful number, since it uses less digits than its factorization.

64500123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16253.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 64500123 is about 8031.1968597464. The cubic root of 64500123 is about 401.0392206297.

Adding to 64500123 its reverse (32100546), we get a palindrome (96600669).

The spelling of 64500123 in words is "sixty-four million, five hundred thousand, one hundred twenty-three".