64727513 has 4 divisors (see below), whose sum is σ = 66232848. Its totient is φ = 63222180.

The previous prime is 64727503. The next prime is 64727519. The reversal of 64727513 is 31572746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64727513 - 2¹⁸ = 64465369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64727519) 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 3 ways as a sum of consecutive naturals, for example, 752603 + ... + 752688.

It is an arithmetic number, because the mean of its divisors is an integer number (16558212).

Almost surely, 2^64727513 is an apocalyptic number.

It is an amenable number.

64727513 is a deficient number, since it is larger than the sum of its proper divisors (1505335).

64727513 is a wasteful number, since it uses less digits than its factorization.

64727513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505334.

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

The square root of 64727513 is about 8045.3410741870. The cubic root of 64727513 is about 401.5099450760.

The spelling of 64727513 in words is "sixty-four million, seven hundred twenty-seven thousand, five hundred thirteen".