646614106 has 4 divisors (see below), whose sum is σ = 969921162. Its totient is φ = 323307052.

The previous prime is 646614079. The next prime is 646614113. The reversal of 646614106 is 601416646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601416646 = 2 ⋅300708323.

It can be written as a sum of positive squares in only one way, i.e., 414326025 + 232288081 = 20355^2 + 15241^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 161653525 + ... + 161653528.

Almost surely, 2^646614106 is an apocalyptic number.

646614106 is a deficient number, since it is larger than the sum of its proper divisors (323307056).

646614106 is a wasteful number, since it uses less digits than its factorization.

646614106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323307055.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 646614106 is about 25428.6080232481. The cubic root of 646614106 is about 864.7323867257.

The spelling of 646614106 in words is "six hundred forty-six million, six hundred fourteen thousand, one hundred six".