645035152 has 20 divisors (see below), whose sum is σ = 1251013680. Its totient is φ = 322192928.

The previous prime is 645035147. The next prime is 645035189. The reversal of 645035152 is 251530546.

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 in 3 ways as a sum of consecutive naturals, for example, 3478 + ... + 36085.

It is an arithmetic number, because the mean of its divisors is an integer number (62550684).

Almost surely, 2^645035152 is an apocalyptic number.

It is an amenable number.

645035152 is a deficient number, since it is larger than the sum of its proper divisors (605978528).

645035152 is a wasteful number, since it uses less digits than its factorization.

645035152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40590 (or 40584 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 645035152 is about 25397.5422432959. The cubic root of 645035152 is about 864.0279554855.

Adding to 645035152 its reverse (251530546), we get a palindrome (896565698).

The spelling of 645035152 in words is "six hundred forty-five million, thirty-five thousand, one hundred fifty-two".