646922982103 has 4 divisors (see below), whose sum is σ = 646924690008. Its totient is φ = 646921274200.

The previous prime is 646922982023. The next prime is 646922982109. The reversal of 646922982103 is 301289229646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301289229646 = 2 ⋅150644614823.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646922982103 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 (646922982109) 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, 3373 + ... + 1137478.

It is an arithmetic number, because the mean of its divisors is an integer number (161731172502).

Almost surely, 2^646922982103 is an apocalyptic number.

646922982103 is a deficient number, since it is larger than the sum of its proper divisors (1707905).

646922982103 is a wasteful number, since it uses less digits than its factorization.

646922982103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707904.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 646922982103 in words is "six hundred forty-six billion, nine hundred twenty-two million, nine hundred eighty-two thousand, one hundred three".