67140879 has 16 divisors (see below), whose sum is σ = 98044800. Its totient is φ = 40615776.

The previous prime is 67140869. The next prime is 67140883. The reversal of 67140879 is 97804176.

It is not a de Polignac number, because 67140879 - 2⁷ = 67140751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67140879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67140869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12289 + ... + 16890.

It is an arithmetic number, because the mean of its divisors is an integer number (6127800).

Almost surely, 2^67140879 is an apocalyptic number.

67140879 is a deficient number, since it is larger than the sum of its proper divisors (30903921).

67140879 is a wasteful number, since it uses less digits than its factorization.

67140879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29254.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 67140879 is about 8193.9538075339. The cubic root of 67140879 is about 406.4392808218.

The spelling of 67140879 in words is "sixty-seven million, one hundred forty thousand, eight hundred seventy-nine".