64386461 has 2 divisors, whose sum is σ = 64386462. Its totient is φ = 64386460.

The previous prime is 64386431. The next prime is 64386493. The reversal of 64386461 is 16468346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40081561 + 24304900 = 6331^2 + 4930^2 .

It is a cyclic number.

It is not a de Polignac number, because 64386461 - 2¹⁸ = 64124317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64386431) 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 as a sum of consecutive naturals, namely, 32193230 + 32193231.

It is an arithmetic number, because the mean of its divisors is an integer number (32193231).

Almost surely, 2^64386461 is an apocalyptic number.

It is an amenable number.

64386461 is a deficient number, since it is larger than the sum of its proper divisors (1).

64386461 is an equidigital number, since it uses as much as digits as its factorization.

64386461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 64386461 is about 8024.1174592599. The cubic root of 64386461 is about 400.8035119240.

The spelling of 64386461 in words is "sixty-four million, three hundred eighty-six thousand, four hundred sixty-one".