645034232 has 16 divisors (see below), whose sum is σ = 1214503200. Its totient is φ = 321166720.

The previous prime is 645034231. The next prime is 645034253. The reversal of 645034232 is 232430546.

645034232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 645034195 and 645034204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645034231) 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, 166769 + ... + 170592.

It is an arithmetic number, because the mean of its divisors is an integer number (75906450).

Almost surely, 2^645034232 is an apocalyptic number.

It is an amenable number.

645034232 is a deficient number, since it is larger than the sum of its proper divisors (569468968).

645034232 is a wasteful number, since it uses less digits than its factorization.

645034232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337606 (or 337602 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 645034232 is about 25397.5241313007. The cubic root of 645034232 is about 864.0275447037.

Adding to 645034232 its reverse (232430546), we get a palindrome (877464778).

The spelling of 645034232 in words is "six hundred forty-five million, thirty-four thousand, two hundred thirty-two".