64277641 has 2 divisors, whose sum is σ = 64277642. Its totient is φ = 64277640.

The previous prime is 64277611. The next prime is 64277657. The reversal of 64277641 is 14677246.

64277641 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., 62015625 + 2262016 = 7875^2 + 1504^2 .

It is a cyclic number.

It is not a de Polignac number, because 64277641 - 2¹⁷ = 64146569 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64277641.

It is not a weakly prime, because it can be changed into another prime (64277611) 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 as a sum of consecutive naturals, namely, 32138820 + 32138821.

It is an arithmetic number, because the mean of its divisors is an integer number (32138821).

Almost surely, 2^64277641 is an apocalyptic number.

It is an amenable number.

64277641 is a deficient number, since it is larger than the sum of its proper divisors (1).

64277641 is an equidigital number, since it uses as much as digits as its factorization.

64277641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 64277641 is about 8017.3337837463. Note that the first 3 decimals coincide. The cubic root of 64277641 is about 400.5775843394.

The spelling of 64277641 in words is "sixty-four million, two hundred seventy-seven thousand, six hundred forty-one".