640036103 has 8 divisors (see below), whose sum is σ = 741772800. Its totient is φ = 540875160.

The previous prime is 640036079. The next prime is 640036127. The reversal of 640036103 is 301630046.

It is an interprime number because it is at equal distance from previous prime (640036079) and next prime (640036127).

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

It is not a de Polignac number, because 640036103 - 2⁶ = 640036039 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 (640036303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643403 + ... + 644396.

It is an arithmetic number, because the mean of its divisors is an integer number (92721600).

Almost surely, 2^640036103 is an apocalyptic number.

640036103 is a deficient number, since it is larger than the sum of its proper divisors (101736697).

640036103 is a wasteful number, since it uses less digits than its factorization.

640036103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287877.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 640036103 is about 25298.9348194741. The cubic root of 640036103 is about 861.7900801988.

Adding to 640036103 its reverse (301630046), we get a palindrome (941666149).

The spelling of 640036103 in words is "six hundred forty million, thirty-six thousand, one hundred three".