64805479 has 8 divisors (see below), whose sum is σ = 68711328. Its totient is φ = 60910080.

The previous prime is 64805471. The next prime is 64805509. The reversal of 64805479 is 97450846.

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 64805479 - 2³ = 64805471 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 (64805471) 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, 12814 + ... + 17140.

It is an arithmetic number, because the mean of its divisors is an integer number (8588916).

Almost surely, 2^64805479 is an apocalyptic number.

64805479 is a deficient number, since it is larger than the sum of its proper divisors (3905849).

64805479 is a wasteful number, since it uses less digits than its factorization.

64805479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 64805479 is about 8050.1850289295. The cubic root of 64805479 is about 401.6710901720.

The spelling of 64805479 in words is "sixty-four million, eight hundred five thousand, four hundred seventy-nine".