64540103 has 4 divisors (see below), whose sum is σ = 65424288. Its totient is φ = 63655920.

The previous prime is 64540087. The next prime is 64540123. The reversal of 64540103 is 30104546.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64540103 - 2⁴ = 64540087 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 (64540123) 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, 441983 + ... + 442128.

It is an arithmetic number, because the mean of its divisors is an integer number (16356072).

Almost surely, 2^64540103 is an apocalyptic number.

64540103 is a deficient number, since it is larger than the sum of its proper divisors (884185).

64540103 is an equidigital number, since it uses as much as digits as its factorization.

64540103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884184.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 64540103 is about 8033.6855178679. The cubic root of 64540103 is about 401.1220640707.

Adding to 64540103 its reverse (30104546), we get a palindrome (94644649).

The spelling of 64540103 in words is "sixty-four million, five hundred forty thousand, one hundred three".