641161073 has 8 divisors (see below), whose sum is σ = 740989440. Its totient is φ = 543391200.

The previous prime is 641161067. The next prime is 641161093. The reversal of 641161073 is 370161146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641161073 - 2¹² = 641156977 is a prime.

It is a super-2 number, since 2×641161073² = 822175043061022658, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (641161033) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 513953 + ... + 515198.

It is an arithmetic number, because the mean of its divisors is an integer number (92623680).

Almost surely, 2^641161073 is an apocalyptic number.

It is an amenable number.

641161073 is a deficient number, since it is larger than the sum of its proper divisors (99828367).

641161073 is a wasteful number, since it uses less digits than its factorization.

641161073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029247.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 641161073 is about 25321.1586030339. The cubic root of 641161073 is about 862.2946978414.

The spelling of 641161073 in words is "six hundred forty-one million, one hundred sixty-one thousand, seventy-three".