641741146 has 4 divisors (see below), whose sum is σ = 962611722. Its totient is φ = 320870572.

The previous prime is 641741141. The next prime is 641741161. The reversal of 641741146 is 641147146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 360810025 + 280931121 = 18995^2 + 16761^2 .

It is not an unprimeable number, because it can be changed into a prime (641741141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160435285 + ... + 160435288.

Almost surely, 2^641741146 is an apocalyptic number.

641741146 is a deficient number, since it is larger than the sum of its proper divisors (320870576).

641741146 is a wasteful number, since it uses less digits than its factorization.

641741146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320870575.

The product of its digits is 16128, while the sum is 34.

The square root of 641741146 is about 25332.6103274021. The cubic root of 641741146 is about 862.5546653303.

The spelling of 641741146 in words is "six hundred forty-one million, seven hundred forty-one thousand, one hundred forty-six".