645464607814 has 48 divisors (see below), whose sum is σ = 1111032864720. Its totient is φ = 280140456960.

The previous prime is 645464607787. The next prime is 645464607829. The reversal of 645464607814 is 418706464546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6680602 + ... + 6776530.

It is an arithmetic number, because the mean of its divisors is an integer number (23146518015).

Almost surely, 2^645464607814 is an apocalyptic number.

645464607814 is a deficient number, since it is larger than the sum of its proper divisors (465568256906).

645464607814 is a wasteful number, since it uses less digits than its factorization.

645464607814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97145 (or 97132 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 55.

The spelling of 645464607814 in words is "six hundred forty-five billion, four hundred sixty-four million, six hundred seven thousand, eight hundred fourteen".