64344155 has 8 divisors (see below), whose sum is σ = 77350272. Its totient is φ = 51383808.

The previous prime is 64344151. The next prime is 64344307. The reversal of 64344155 is 55144346.

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 64344155 - 2² = 64344151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64344151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8267 + ... + 14036.

It is an arithmetic number, because the mean of its divisors is an integer number (9668784).

Almost surely, 2^64344155 is an apocalyptic number.

64344155 is a deficient number, since it is larger than the sum of its proper divisors (13006117).

64344155 is a wasteful number, since it uses less digits than its factorization.

64344155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22885.

The product of its digits is 28800, while the sum is 32.

The square root of 64344155 is about 8021.4808483222. The cubic root of 64344155 is about 400.7157082239.

The spelling of 64344155 in words is "sixty-four million, three hundred forty-four thousand, one hundred fifty-five".