645465710 has 16 divisors (see below), whose sum is σ = 1162403136. Its totient is φ = 258060768.

The previous prime is 645465697. The next prime is 645465719. The reversal of 645465710 is 17564546.

645465710 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645465719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7547 + ... + 36713.

It is an arithmetic number, because the mean of its divisors is an integer number (72650196).

Almost surely, 2^645465710 is an apocalyptic number.

645465710 is a deficient number, since it is larger than the sum of its proper divisors (516937426).

645465710 is a wasteful number, since it uses less digits than its factorization.

645465710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31387.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 645465710 is about 25406.0172006554. The cubic root of 645465710 is about 864.2201576238.

The spelling of 645465710 in words is "six hundred forty-five million, four hundred sixty-five thousand, seven hundred ten".