645453024 has 48 divisors (see below), whose sum is σ = 1711115280. Its totient is φ = 213017600.

The previous prime is 645453019. The next prime is 645453031. The reversal of 645453024 is 420354546.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23589 + ... + 42980.

It is an arithmetic number, because the mean of its divisors is an integer number (35648235).

Almost surely, 2^645453024 is an apocalyptic number.

It is an amenable number.

645453024 is an abundant number, since it is smaller than the sum of its proper divisors (1065662256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645453024 is a wasteful number, since it uses less digits than its factorization.

645453024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66683 (or 66675 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 645453024 is about 25405.7675341644. The cubic root of 645453024 is about 864.2144957849.

The spelling of 645453024 in words is "six hundred forty-five million, four hundred fifty-three thousand, twenty-four".