64752511 has 4 divisors (see below), whose sum is σ = 66130272. Its totient is φ = 63374752.

The previous prime is 64752491. The next prime is 64752581. The reversal of 64752511 is 11525746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64752511 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 (64752581) 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, 688810 + ... + 688903.

It is an arithmetic number, because the mean of its divisors is an integer number (16532568).

Almost surely, 2^64752511 is an apocalyptic number.

64752511 is a deficient number, since it is larger than the sum of its proper divisors (1377761).

64752511 is a wasteful number, since it uses less digits than its factorization.

64752511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377760.

The product of its digits is 8400, while the sum is 31.

The square root of 64752511 is about 8046.8944941511. The cubic root of 64752511 is about 401.5616266218.

The spelling of 64752511 in words is "sixty-four million, seven hundred fifty-two thousand, five hundred eleven".