645892364 has 12 divisors (see below), whose sum is σ = 1217258784. Its totient is φ = 298104144.

The previous prime is 645892363. The next prime is 645892369. The reversal of 645892364 is 463298546.

645892364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (645892361) 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, 6210452 + ... + 6210555.

It is an arithmetic number, because the mean of its divisors is an integer number (101438232).

Almost surely, 2^645892364 is an apocalyptic number.

It is an amenable number.

645892364 is a deficient number, since it is larger than the sum of its proper divisors (571366420).

645892364 is a wasteful number, since it uses less digits than its factorization.

645892364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12421024 (or 12421022 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 47.

The square root of 645892364 is about 25414.4125251795. The cubic root of 645892364 is about 864.4105327122.

The spelling of 645892364 in words is "six hundred forty-five million, eight hundred ninety-two thousand, three hundred sixty-four".