641048786 has 16 divisors (see below), whose sum is σ = 1105016640. Its totient is φ = 273216240.

The previous prime is 641048777. The next prime is 641048813. The reversal of 641048786 is 687840146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123956 + ... + 129023.

It is an arithmetic number, because the mean of its divisors is an integer number (69063540).

Almost surely, 2^641048786 is an apocalyptic number.

641048786 is a deficient number, since it is larger than the sum of its proper divisors (463967854).

641048786 is a wasteful number, since it uses less digits than its factorization.

641048786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253169.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 641048786 is about 25318.9412495862. The cubic root of 641048786 is about 862.2443568056.

The spelling of 641048786 in words is "six hundred forty-one million, forty-eight thousand, seven hundred eighty-six".