645085024 has 24 divisors (see below), whose sum is σ = 1281887208. Its totient is φ = 319526400.

The previous prime is 645084997. The next prime is 645085037. The reversal of 645085024 is 420580546.

645085024 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×645085024² = 832269376378161152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90777 + ... + 97624.

It is an arithmetic number, because the mean of its divisors is an integer number (53411967).

Almost surely, 2^645085024 is an apocalyptic number.

It is an amenable number.

645085024 is a deficient number, since it is larger than the sum of its proper divisors (636802184).

645085024 is a wasteful number, since it uses less digits than its factorization.

645085024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188518 (or 188510 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 645085024 is about 25398.5240516058. The cubic root of 645085024 is about 864.0502228465.

The spelling of 645085024 in words is "six hundred forty-five million, eighty-five thousand, twenty-four".