64587779 has 2 divisors, whose sum is σ = 64587780. Its totient is φ = 64587778.

The previous prime is 64587767. The next prime is 64587791. The reversal of 64587779 is 97778546.

It is a balanced prime because it is at equal distance from previous prime (64587767) and next prime (64587791).

It is a cyclic number.

It is not a de Polignac number, because 64587779 - 2¹² = 64583683 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 64587779.

It is not a weakly prime, because it can be changed into another prime (64580779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32293889 + 32293890.

It is an arithmetic number, because the mean of its divisors is an integer number (32293890).

Almost surely, 2^64587779 is an apocalyptic number.

64587779 is a deficient number, since it is larger than the sum of its proper divisors (1).

64587779 is an equidigital number, since it uses as much as digits as its factorization.

64587779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 53.

The square root of 64587779 is about 8036.6522258961. The cubic root of 64587779 is about 401.2208098510.

The spelling of 64587779 in words is "sixty-four million, five hundred eighty-seven thousand, seven hundred seventy-nine".