643762002 has 16 divisors (see below), whose sum is σ = 1386564480. Its totient is φ = 198080592.

The previous prime is 643761997. The next prime is 643762003. The reversal of 643762002 is 200267346.

643762002 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 (643762003) 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, 4126602 + ... + 4126757.

It is an arithmetic number, because the mean of its divisors is an integer number (86660280).

Almost surely, 2^643762002 is an apocalyptic number.

643762002 is an abundant number, since it is smaller than the sum of its proper divisors (742802478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643762002 is a wasteful number, since it uses less digits than its factorization.

643762002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8253377.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 643762002 is about 25372.4654300681. The cubic root of 643762002 is about 863.4591173778.

The spelling of 643762002 in words is "six hundred forty-three million, seven hundred sixty-two thousand, two".