646285103 has 4 divisors (see below), whose sum is σ = 646358880. Its totient is φ = 646211328.

The previous prime is 646285067. The next prime is 646285147. The reversal of 646285103 is 301582646.

646285103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 301582646 = 2 ⋅150791323.

It is a cyclic number.

It is not a de Polignac number, because 646285103 - 2¹² = 646281007 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 (646285183) 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, 21650 + ... + 41967.

It is an arithmetic number, because the mean of its divisors is an integer number (161589720).

Almost surely, 2^646285103 is an apocalyptic number.

646285103 is a deficient number, since it is larger than the sum of its proper divisors (73777).

646285103 is a wasteful number, since it uses less digits than its factorization.

646285103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73776.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 646285103 is about 25422.1380493459. The cubic root of 646285103 is about 864.5857006716.

The spelling of 646285103 in words is "six hundred forty-six million, two hundred eighty-five thousand, one hundred three".