645068763070 has 32 divisors (see below), whose sum is σ = 1235968567200. Its totient is φ = 241700507136.

The previous prime is 645068763047. The next prime is 645068763071. The reversal of 645068763070 is 70367860546.

It is a happy number.

645068763070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×645068763070² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 645068762999 and 645068763017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645068763071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19056679 + ... + 19090498.

It is an arithmetic number, because the mean of its divisors is an integer number (38624017725).

Almost surely, 2^645068763070 is an apocalyptic number.

645068763070 is a deficient number, since it is larger than the sum of its proper divisors (590899804130).

645068763070 is a wasteful number, since it uses less digits than its factorization.

645068763070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38147292.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 645068763070 in words is "six hundred forty-five billion, sixty-eight million, seven hundred sixty-three thousand, seventy".