64513727 has 8 divisors (see below), whose sum is σ = 65760000. Its totient is φ = 63272664.

The previous prime is 64513703. The next prime is 64513733. The reversal of 64513727 is 72731546.

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 64513727 - 2⁶ = 64513663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64513747) 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, 31274 + ... + 33272.

It is an arithmetic number, because the mean of its divisors is an integer number (8220000).

Almost surely, 2^64513727 is an apocalyptic number.

64513727 is a deficient number, since it is larger than the sum of its proper divisors (1246273).

64513727 is a wasteful number, since it uses less digits than its factorization.

64513727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605.

The product of its digits is 35280, while the sum is 35.

The square root of 64513727 is about 8032.0437623310. The cubic root of 64513727 is about 401.0674136200.

The spelling of 64513727 in words is "sixty-four million, five hundred thirteen thousand, seven hundred twenty-seven".