64315655 has 16 divisors (see below), whose sum is σ = 78786624. Its totient is φ = 50388480.

The previous prime is 64315651. The next prime is 64315661. The reversal of 64315655 is 55651346.

64315655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64315655 - 2² = 64315651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64315651) 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 15 ways as a sum of consecutive naturals, for example, 131822 + ... + 132308.

It is an arithmetic number, because the mean of its divisors is an integer number (4924164).

Almost surely, 2^64315655 is an apocalyptic number.

64315655 is a deficient number, since it is larger than the sum of its proper divisors (14470969).

64315655 is a wasteful number, since it uses less digits than its factorization.

64315655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986.

The product of its digits is 54000, while the sum is 35.

The square root of 64315655 is about 8019.7041716013. The cubic root of 64315655 is about 400.6565363937.

The spelling of 64315655 in words is "sixty-four million, three hundred fifteen thousand, six hundred fifty-five".