645106614 has 8 divisors (see below), whose sum is σ = 1290213240. Its totient is φ = 215035536.

The previous prime is 645106591. The next prime is 645106643. The reversal of 645106614 is 416601546.

It is a happy number.

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

645106614 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53758879 + ... + 53758890.

It is an arithmetic number, because the mean of its divisors is an integer number (161276655).

Almost surely, 2^645106614 is an apocalyptic number.

645106614 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645106614 is a wasteful number, since it uses less digits than its factorization.

645106614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107517774.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 645106614 is about 25398.9490727471. The cubic root of 645106614 is about 864.0598622147.

The spelling of 645106614 in words is "six hundred forty-five million, one hundred six thousand, six hundred fourteen".