643004034 has 16 divisors (see below), whose sum is σ = 1287044640. Its totient is φ = 214161920.

The previous prime is 643003997. The next prime is 643004041. The reversal of 643004034 is 430400346.

It is a junction number, because it is equal to n+sod(n) for n = 643003995 and 643004013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35007 + ... + 50114.

It is an arithmetic number, because the mean of its divisors is an integer number (80440290).

Almost surely, 2^643004034 is an apocalyptic number.

643004034 is an abundant number, since it is smaller than the sum of its proper divisors (644040606).

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

643004034 is a wasteful number, since it uses less digits than its factorization.

643004034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86385.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 643004034 is about 25357.5242088024. The cubic root of 643004034 is about 863.1201041987.

The spelling of 643004034 in words is "six hundred forty-three million, four thousand, thirty-four".