645214713 has 24 divisors (see below), whose sum is σ = 1018350144. Its totient is φ = 360956640.

The previous prime is 645214697. The next prime is 645214723. The reversal of 645214713 is 317412546.

It is not a de Polignac number, because 645214713 - 2⁴ = 645214697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (645214723) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 63645 + ... + 73082.

It is an arithmetic number, because the mean of its divisors is an integer number (42431256).

Almost surely, 2^645214713 is an apocalyptic number.

It is an amenable number.

645214713 is a deficient number, since it is larger than the sum of its proper divisors (373135431).

645214713 is a wasteful number, since it uses less digits than its factorization.

645214713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136765 (or 136754 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 645214713 is about 25401.0770047256. The cubic root of 645214713 is about 864.1081223463.

The spelling of 645214713 in words is "six hundred forty-five million, two hundred fourteen thousand, seven hundred thirteen".