64824641 has 4 divisors (see below), whose sum is σ = 74085312. Its totient is φ = 55563972.

The previous prime is 64824619. The next prime is 64824653. The reversal of 64824641 is 14642846.

64824641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64824641 - 2¹⁰ = 64823617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64824241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4630325 + ... + 4630338.

It is an arithmetic number, because the mean of its divisors is an integer number (18521328).

Almost surely, 2^64824641 is an apocalyptic number.

It is an amenable number.

64824641 is a deficient number, since it is larger than the sum of its proper divisors (9260671).

64824641 is an equidigital number, since it uses as much as digits as its factorization.

64824641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9260670.

The product of its digits is 36864, while the sum is 35.

The square root of 64824641 is about 8051.3750999441. The cubic root of 64824641 is about 401.7106756261.

The spelling of 64824641 in words is "sixty-four million, eight hundred twenty-four thousand, six hundred forty-one".