645045062 has 4 divisors (see below), whose sum is σ = 967567596. Its totient is φ = 322522530.

The previous prime is 645045047. The next prime is 645045073. The reversal of 645045062 is 260540546.

645045062 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161261264 + ... + 161261267.

It is an arithmetic number, because the mean of its divisors is an integer number (241891899).

Almost surely, 2^645045062 is an apocalyptic number.

645045062 is a deficient number, since it is larger than the sum of its proper divisors (322522534).

645045062 is a wasteful number, since it uses less digits than its factorization.

645045062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322522533.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 645045062 is about 25397.7373401648. The cubic root of 645045062 is about 864.0323802951.

The spelling of 645045062 in words is "six hundred forty-five million, forty-five thousand, sixty-two".