640246702010 has 8 divisors (see below), whose sum is σ = 1152444063636. Its totient is φ = 256098680800.

The previous prime is 640246701971. The next prime is 640246702027. The reversal of 640246702010 is 10207642046.

It can be written as a sum of positive squares in 2 ways, for example, as 585664192369 + 54582509641 = 765287^2 + 233629^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32012335091 + ... + 32012335110.

Almost surely, 2^640246702010 is an apocalyptic number.

640246702010 is a deficient number, since it is larger than the sum of its proper divisors (512197361626).

640246702010 is a wasteful number, since it uses less digits than its factorization.

640246702010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64024670208.

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 640246702010 in words is "six hundred forty billion, two hundred forty-six million, seven hundred two thousand, ten".