641473066 has 32 divisors (see below), whose sum is σ = 1053360000. Its totient is φ = 291211200.

The previous prime is 641473051. The next prime is 641473067. The reversal of 641473066 is 660374146.

It is a super-2 number, since 2×641473066² = 822975388806880712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641473067) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 427185 + ... + 428683.

It is an arithmetic number, because the mean of its divisors is an integer number (32917500).

Almost surely, 2^641473066 is an apocalyptic number.

641473066 is a deficient number, since it is larger than the sum of its proper divisors (411886934).

641473066 is a wasteful number, since it uses less digits than its factorization.

641473066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 641473066 is about 25327.3185710608. The cubic root of 641473066 is about 862.4345411639.

The spelling of 641473066 in words is "six hundred forty-one million, four hundred seventy-three thousand, sixty-six".