64875679 has 8 divisors (see below), whose sum is σ = 70946640. Its totient is φ = 58833600.

The previous prime is 64875677. The next prime is 64875721. The reversal of 64875679 is 97657846.

It is a happy number.

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 64875679 - 2¹ = 64875677 is a prime.

It is a super-2 number, since 2×64875679² = 8417707451422082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64875677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2374 + ... + 11635.

It is an arithmetic number, because the mean of its divisors is an integer number (8868330).

Almost surely, 2^64875679 is an apocalyptic number.

64875679 is a deficient number, since it is larger than the sum of its proper divisors (6070961).

64875679 is a wasteful number, since it uses less digits than its factorization.

64875679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14441.

The product of its digits is 2540160, while the sum is 52.

The square root of 64875679 is about 8054.5439970243. The cubic root of 64875679 is about 401.8160734645.

The spelling of 64875679 in words is "sixty-four million, eight hundred seventy-five thousand, six hundred seventy-nine".