64518361 has 8 divisors (see below), whose sum is σ = 66133760. Its totient is φ = 62908272.

The previous prime is 64518323. The next prime is 64518397. The reversal of 64518361 is 16381546.

It is a happy number.

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 64518361 - 2²³ = 56129753 is a prime.

It is a super-2 number, since 2×64518361² = 8325237812252642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64518761) 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, 35800 + ... + 37558.

It is an arithmetic number, because the mean of its divisors is an integer number (8266720).

Almost surely, 2^64518361 is an apocalyptic number.

It is an amenable number.

64518361 is a deficient number, since it is larger than the sum of its proper divisors (1615399).

64518361 is a wasteful number, since it uses less digits than its factorization.

64518361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655.

The product of its digits is 17280, while the sum is 34.

The square root of 64518361 is about 8032.3322266948. The cubic root of 64518361 is about 401.0770162374.

The spelling of 64518361 in words is "sixty-four million, five hundred eighteen thousand, three hundred sixty-one".