641077 has 2 divisors, whose sum is σ = 641078. Its totient is φ = 641076.

The previous prime is 641057. The next prime is 641083. The reversal of 641077 is 770146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401956 + 239121 = 634^2 + 489^2 .

It is a cyclic number.

It is not a de Polignac number, because 641077 - 2⁷ = 640949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320538 + 320539.

It is an arithmetic number, because the mean of its divisors is an integer number (320539).

2⁶⁴¹⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

641077 is a deficient number, since it is larger than the sum of its proper divisors (1).

641077 is an equidigital number, since it uses as much as digits as its factorization.

641077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 641077 is about 800.6728420522. The cubic root of 641077 is about 86.2257006392.

The spelling of 641077 in words is "six hundred forty-one thousand, seventy-seven".