641063404 has 12 divisors (see below), whose sum is σ = 1187852904. Its totient is φ = 301676864.

The previous prime is 641063399. The next prime is 641063417. The reversal of 641063404 is 404360146.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4713634 + ... + 4713769.

It is an arithmetic number, because the mean of its divisors is an integer number (98987742).

Almost surely, 2^641063404 is an apocalyptic number.

It is an amenable number.

641063404 is a deficient number, since it is larger than the sum of its proper divisors (546789500).

641063404 is a wasteful number, since it uses less digits than its factorization.

641063404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427424 (or 9427422 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 641063404 is about 25319.2299250984. The cubic root of 641063404 is about 862.2509107489.

The spelling of 641063404 in words is "six hundred forty-one million, sixty-three thousand, four hundred four".