645354124 has 6 divisors (see below), whose sum is σ = 1129369724. Its totient is φ = 322677060.

The previous prime is 645354113. The next prime is 645354137. The reversal of 645354124 is 421453546.

645354124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 645354124.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80669262 + ... + 80669269.

Almost surely, 2^645354124 is an apocalyptic number.

It is an amenable number.

645354124 is a deficient number, since it is larger than the sum of its proper divisors (484015600).

645354124 is a wasteful number, since it uses less digits than its factorization.

645354124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161338535 (or 161338533 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 645354124 is about 25403.8210511726. The cubic root of 645354124 is about 864.1703535694.

The spelling of 645354124 in words is "six hundred forty-five million, three hundred fifty-four thousand, one hundred twenty-four".