64277273 has 2 divisors, whose sum is σ = 64277274. Its totient is φ = 64277272.

The previous prime is 64277267. The next prime is 64277293. The reversal of 64277273 is 37277246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38093584 + 26183689 = 6172^2 + 5117^2 .

It is a cyclic number.

It is not a de Polignac number, because 64277273 - 2¹² = 64273177 is a prime.

It is not a weakly prime, because it can be changed into another prime (64277233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32138636 + 32138637.

It is an arithmetic number, because the mean of its divisors is an integer number (32138637).

Almost surely, 2^64277273 is an apocalyptic number.

It is an amenable number.

64277273 is a deficient number, since it is larger than the sum of its proper divisors (1).

64277273 is an equidigital number, since it uses as much as digits as its factorization.

64277273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 38.

The square root of 64277273 is about 8017.3108334404. The cubic root of 64277273 is about 400.5768198806.

The spelling of 64277273 in words is "sixty-four million, two hundred seventy-seven thousand, two hundred seventy-three".