645862696 has 16 divisors (see below), whose sum is σ = 1211364000. Its totient is φ = 322832304.

The previous prime is 645862681. The next prime is 645862697. The reversal of 645862696 is 696268546.

645862696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (645862697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20455 + ... + 41353.

It is an arithmetic number, because the mean of its divisors is an integer number (75710250).

Almost surely, 2^645862696 is an apocalyptic number.

It is an amenable number.

645862696 is a deficient number, since it is larger than the sum of its proper divisors (565501304).

645862696 is a wasteful number, since it uses less digits than its factorization.

645862696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24768 (or 24764 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The square root of 645862696 is about 25413.8288339243. The cubic root of 645862696 is about 864.3972974191.

The spelling of 645862696 in words is "six hundred forty-five million, eight hundred sixty-two thousand, six hundred ninety-six".