645003695 has 16 divisors (see below), whose sum is σ = 887715840. Its totient is φ = 440718624.

The previous prime is 645003683. The next prime is 645003719. The reversal of 645003695 is 596300546.

It is a cyclic number.

It is not a de Polignac number, because 645003695 - 2⁶ = 645003631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22655 + ... + 42464.

It is an arithmetic number, because the mean of its divisors is an integer number (55482240).

Almost surely, 2^645003695 is an apocalyptic number.

645003695 is a deficient number, since it is larger than the sum of its proper divisors (242712145).

645003695 is a wasteful number, since it uses less digits than its factorization.

645003695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65414.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 645003695 is about 25396.9229435379. The cubic root of 645003695 is about 864.0139096519.

The spelling of 645003695 in words is "six hundred forty-five million, three thousand, six hundred ninety-five".