64377678 has 32 divisors (see below), whose sum is σ = 131878656. Its totient is φ = 20945088.

The previous prime is 64377671. The next prime is 64377679. The reversal of 64377678 is 87677346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64377671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44401 + ... + 45827.

It is an arithmetic number, because the mean of its divisors is an integer number (4121208).

Almost surely, 2^64377678 is an apocalyptic number.

64377678 is an abundant number, since it is smaller than the sum of its proper divisors (67500978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64377678 is a wasteful number, since it uses less digits than its factorization.

64377678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608.

The product of its digits is 1185408, while the sum is 48.

The square root of 64377678 is about 8023.5701529930. The cubic root of 64377678 is about 400.7852864707.

The spelling of 64377678 in words is "sixty-four million, three hundred seventy-seven thousand, six hundred seventy-eight".