645325735 has 16 divisors (see below), whose sum is σ = 785581056. Its totient is φ = 508854528.

The previous prime is 645325693. The next prime is 645325741. The reversal of 645325735 is 537523546.

It is a cyclic number.

It is not a de Polignac number, because 645325735 - 2⁹ = 645325223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96459 + ... + 102931.

It is an arithmetic number, because the mean of its divisors is an integer number (49098816).

Almost surely, 2^645325735 is an apocalyptic number.

645325735 is a deficient number, since it is larger than the sum of its proper divisors (140255321).

645325735 is a wasteful number, since it uses less digits than its factorization.

645325735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762.

The product of its digits is 378000, while the sum is 40.

The square root of 645325735 is about 25403.2622905012. The cubic root of 645325735 is about 864.1576818227.

The spelling of 645325735 in words is "six hundred forty-five million, three hundred twenty-five thousand, seven hundred thirty-five".