64876787 has 2 divisors, whose sum is σ = 64876788. Its totient is φ = 64876786.

The previous prime is 64876783. The next prime is 64876793. The reversal of 64876787 is 78767846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64876787 - 2² = 64876783 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64876781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32438393 + 32438394.

It is an arithmetic number, because the mean of its divisors is an integer number (32438394).

Almost surely, 2^64876787 is an apocalyptic number.

64876787 is a deficient number, since it is larger than the sum of its proper divisors (1).

64876787 is an equidigital number, since it uses as much as digits as its factorization.

64876787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3161088, while the sum is 53.

The square root of 64876787 is about 8054.6127777814. The cubic root of 64876787 is about 401.8183609662.

The spelling of 64876787 in words is "sixty-four million, eight hundred seventy-six thousand, seven hundred eighty-seven".