640604035034 has 8 divisors (see below), whose sum is σ = 961669285920. Its totient is φ = 320047606396.

The previous prime is 640604035013. The next prime is 640604035039. The reversal of 640604035034 is 430530406046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 640604034985 and 640604035003.

It is not an unprimeable number, because it can be changed into a prime (640604035039) 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, 127202414 + ... + 127207449.

It is an arithmetic number, because the mean of its divisors is an integer number (120208660740).

Almost surely, 2^640604035034 is an apocalyptic number.

640604035034 is a deficient number, since it is larger than the sum of its proper divisors (321065250886).

640604035034 is a wasteful number, since it uses less digits than its factorization.

640604035034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254411124.

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 640604035034 in words is "six hundred forty billion, six hundred four million, thirty-five thousand, thirty-four".