646000103 has 32 divisors (see below), whose sum is σ = 806879232. Its totient is φ = 505058400.

The previous prime is 646000099. The next prime is 646000111. The reversal of 646000103 is 301000646.

646000103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646000103 - 2² = 646000099 is a prime.

It is a super-2 number, since 2×646000103² = 834632266152021218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646000123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353450 + ... + 355272.

It is an arithmetic number, because the mean of its divisors is an integer number (25214976).

Almost surely, 2^646000103 is an apocalyptic number.

646000103 is a deficient number, since it is larger than the sum of its proper divisors (160879129).

646000103 is a wasteful number, since it uses less digits than its factorization.

646000103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 646000103 is about 25416.5320805180. The cubic root of 646000103 is about 864.4585931187.

Adding to 646000103 its reverse (301000646), we get a palindrome (947000749).

The spelling of 646000103 in words is "six hundred forty-six million, one hundred three", and thus it is an aban number.