643654714 has 16 divisors (see below), whose sum is σ = 1029053376. Its totient is φ = 300888000.

The previous prime is 643654709. The next prime is 643654717. The reversal of 643654714 is 417456346.

643654714 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 (643654717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57552 + ... + 67819.

It is an arithmetic number, because the mean of its divisors is an integer number (64315836).

Almost surely, 2^643654714 is an apocalyptic number.

643654714 is a deficient number, since it is larger than the sum of its proper divisors (385398662).

643654714 is a wasteful number, since it uses less digits than its factorization.

643654714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125541.

The product of its digits is 241920, while the sum is 40.

The square root of 643654714 is about 25370.3510815282. The cubic root of 643654714 is about 863.4111472956.

The spelling of 643654714 in words is "six hundred forty-three million, six hundred fifty-four thousand, seven hundred fourteen".