641006705 has 16 divisors (see below), whose sum is σ = 811614720. Its totient is φ = 484662528.

The previous prime is 641006687. The next prime is 641006713. The reversal of 641006705 is 507600146.

It is a cyclic number.

It is not a de Polignac number, because 641006705 - 2²⁸ = 372571249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33344 + ... + 48926.

It is an arithmetic number, because the mean of its divisors is an integer number (50725920).

Almost surely, 2^641006705 is an apocalyptic number.

It is an amenable number.

641006705 is a deficient number, since it is larger than the sum of its proper divisors (170608015).

641006705 is a wasteful number, since it uses less digits than its factorization.

641006705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16040.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 641006705 is about 25318.1102177868. The cubic root of 641006705 is about 862.2254893394.

The spelling of 641006705 in words is "six hundred forty-one million, six thousand, seven hundred five".