64347377 has 8 divisors (see below), whose sum is σ = 64921896. Its totient is φ = 63775872.

The previous prime is 64347343. The next prime is 64347379. The reversal of 64347377 is 77374346.

It can be written as a sum of positive squares in 4 ways, for example, as 4145296 + 60202081 = 2036^2 + 7759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64347377 - 2⁸ = 64347121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64347379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64043 + ... + 65039.

It is an arithmetic number, because the mean of its divisors is an integer number (8115237).

Almost surely, 2^64347377 is an apocalyptic number.

It is an amenable number.

64347377 is a deficient number, since it is larger than the sum of its proper divisors (574519).

64347377 is a wasteful number, since it uses less digits than its factorization.

64347377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507.

The product of its digits is 296352, while the sum is 41.

The square root of 64347377 is about 8021.6816815428. The cubic root of 64347377 is about 400.7223966556.

The spelling of 64347377 in words is "sixty-four million, three hundred forty-seven thousand, three hundred seventy-seven".