64377478 has 16 divisors (see below), whose sum is σ = 105474960. Its totient is φ = 29226400.

The previous prime is 64377473. The next prime is 64377499. The reversal of 64377478 is 87477346.

64377478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64377473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25848 + ... + 28228.

It is an arithmetic number, because the mean of its divisors is an integer number (6592185).

Almost surely, 2^64377478 is an apocalyptic number.

64377478 is a deficient number, since it is larger than the sum of its proper divisors (41097482).

64377478 is a wasteful number, since it uses less digits than its factorization.

64377478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623.

The product of its digits is 790272, while the sum is 46.

The square root of 64377478 is about 8023.5576897035. The cubic root of 64377478 is about 400.7848714348.

The spelling of 64377478 in words is "sixty-four million, three hundred seventy-seven thousand, four hundred seventy-eight".