64988611 has 4 divisors (see below), whose sum is σ = 65116800. Its totient is φ = 64860424.

The previous prime is 64988591. The next prime is 64988657. The reversal of 64988611 is 11688946.

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

It is a cyclic number.

It is not a de Polignac number, because 64988611 - 2⁵ = 64988579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64988111) 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, 63331 + ... + 64348.

It is an arithmetic number, because the mean of its divisors is an integer number (16279200).

Almost surely, 2^64988611 is an apocalyptic number.

64988611 is a deficient number, since it is larger than the sum of its proper divisors (128189).

64988611 is a wasteful number, since it uses less digits than its factorization.

64988611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128188.

The product of its digits is 82944, while the sum is 43.

The square root of 64988611 is about 8061.5514015604. The cubic root of 64988611 is about 402.0490913869.

The spelling of 64988611 in words is "sixty-four million, nine hundred eighty-eight thousand, six hundred eleven".