64877447 has 2 divisors, whose sum is σ = 64877448. Its totient is φ = 64877446.

The previous prime is 64877413. The next prime is 64877473. The reversal of 64877447 is 74477846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64877447 - 2¹⁰ = 64876423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64871447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32438723 + 32438724.

It is an arithmetic number, because the mean of its divisors is an integer number (32438724).

Almost surely, 2^64877447 is an apocalyptic number.

64877447 is a deficient number, since it is larger than the sum of its proper divisors (1).

64877447 is an equidigital number, since it uses as much as digits as its factorization.

64877447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1053696, while the sum is 47.

The square root of 64877447 is about 8054.6537479894. The cubic root of 64877447 is about 401.8197235451.

The spelling of 64877447 in words is "sixty-four million, eight hundred seventy-seven thousand, four hundred forty-seven".