640103315 has 8 divisors (see below), whose sum is σ = 771765648. Its totient is φ = 509654880.

The previous prime is 640103297. The next prime is 640103353. The reversal of 640103315 is 513301046.

It is a happy number.

640103315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 640103315 - 2⁶ = 640103251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302312 + ... + 304421.

It is an arithmetic number, because the mean of its divisors is an integer number (96470706).

Almost surely, 2^640103315 is an apocalyptic number.

640103315 is a deficient number, since it is larger than the sum of its proper divisors (131662333).

640103315 is a wasteful number, since it uses less digits than its factorization.

640103315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606949.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 640103315 is about 25300.2631409240. The cubic root of 640103315 is about 861.8202454802.

The spelling of 640103315 in words is "six hundred forty million, one hundred three thousand, three hundred fifteen".