64503423 has 24 divisors (see below), whose sum is σ = 103849200. Its totient is φ = 38340864.

The previous prime is 64503403. The next prime is 64503437. The reversal of 64503423 is 32430546.

It is not a de Polignac number, because 64503423 - 2⁵ = 64503391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64503403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8188 + ... + 14001.

It is an arithmetic number, because the mean of its divisors is an integer number (4327050).

Almost surely, 2^64503423 is an apocalyptic number.

64503423 is a deficient number, since it is larger than the sum of its proper divisors (39345777).

64503423 is a wasteful number, since it uses less digits than its factorization.

64503423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22231 (or 22228 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 64503423 is about 8031.4023059488. The cubic root of 64503423 is about 401.0460599286.

Adding to 64503423 its reverse (32430546), we get a palindrome (96933969).

The spelling of 64503423 in words is "sixty-four million, five hundred three thousand, four hundred twenty-three".