641197 has 2 divisors, whose sum is σ = 641198. Its totient is φ = 641196.

The previous prime is 641167. The next prime is 641203. The reversal of 641197 is 791146.

641197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556516 + 84681 = 746^2 + 291^2 .

It is a cyclic number.

It is not a de Polignac number, because 641197 - 2¹⁵ = 608429 is a prime.

It is a super-2 number, since 2×641197² = 822267185618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320598 + 320599.

It is an arithmetic number, because the mean of its divisors is an integer number (320599).

2⁶⁴¹¹⁹⁷ is an apocalyptic number.

It is an amenable number.

641197 is a deficient number, since it is larger than the sum of its proper divisors (1).

641197 is an equidigital number, since it uses as much as digits as its factorization.

641197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 641197 is about 800.7477755199. The cubic root of 641197 is about 86.2310803562.

It can be divided in two parts, 641 and 197, that added together give a palindrome (838).

The spelling of 641197 in words is "six hundred forty-one thousand, one hundred ninety-seven".