64381503 has 4 divisors (see below), whose sum is σ = 85842008. Its totient is φ = 42921000.

The previous prime is 64381501. The next prime is 64381543. The reversal of 64381503 is 30518346.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64381503 - 2¹ = 64381501 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 (64381501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10730248 + ... + 10730253.

It is an arithmetic number, because the mean of its divisors is an integer number (21460502).

Almost surely, 2^64381503 is an apocalyptic number.

64381503 is a deficient number, since it is larger than the sum of its proper divisors (21460505).

64381503 is a wasteful number, since it uses less digits than its factorization.

64381503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21460504.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 64381503 is about 8023.8085096792. The cubic root of 64381503 is about 400.7932238666.

Adding to 64381503 its reverse (30518346), we get a palindrome (94899849).

The spelling of 64381503 in words is "sixty-four million, three hundred eighty-one thousand, five hundred three".