64377679 has 2 divisors, whose sum is σ = 64377680. Its totient is φ = 64377678.

The previous prime is 64377671. The next prime is 64377683. The reversal of 64377679 is 97677346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64377679 - 2³ = 64377671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64377671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32188839 + 32188840.

It is an arithmetic number, because the mean of its divisors is an integer number (32188840).

Almost surely, 2^64377679 is an apocalyptic number.

64377679 is a deficient number, since it is larger than the sum of its proper divisors (1).

64377679 is an equidigital number, since it uses as much as digits as its factorization.

64377679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 49.

The square root of 64377679 is about 8023.5702153094. The cubic root of 64377679 is about 400.7852885459.

It can be divided in two parts, 64377 and 679, that added together give a palindrome (65056).

The spelling of 64377679 in words is "sixty-four million, three hundred seventy-seven thousand, six hundred seventy-nine".