641006056 has 64 divisors (see below), whose sum is σ = 1268847360. Its totient is φ = 303264000.

The previous prime is 641006039. The next prime is 641006071. The reversal of 641006056 is 650600146.

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, 2365201 + ... + 2365471.

It is an arithmetic number, because the mean of its divisors is an integer number (19825740).

Almost surely, 2^641006056 is an apocalyptic number.

It is an amenable number.

641006056 is a deficient number, since it is larger than the sum of its proper divisors (627841304).

641006056 is a wasteful number, since it uses less digits than its factorization.

641006056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 641006056 is about 25318.0974008712. The cubic root of 641006056 is about 862.2251983469.

The spelling of 641006056 in words is "six hundred forty-one million, six thousand, fifty-six".