67478959 has 4 divisors (see below), whose sum is σ = 67613616. Its totient is φ = 67344304.

The previous prime is 67478953. The next prime is 67478977. The reversal of 67478959 is 95987476.

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 67478959 - 2⁵ = 67478927 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 (67478953) 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, 66574 + ... + 67579.

It is an arithmetic number, because the mean of its divisors is an integer number (16903404).

Almost surely, 2^67478959 is an apocalyptic number.

67478959 is a deficient number, since it is larger than the sum of its proper divisors (134657).

67478959 is a wasteful number, since it uses less digits than its factorization.

67478959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134656.

The product of its digits is 3810240, while the sum is 55.

The square root of 67478959 is about 8214.5577482905. The cubic root of 67478959 is about 407.1203313806.

The spelling of 67478959 in words is "sixty-seven million, four hundred seventy-eight thousand, nine hundred fifty-nine".