67876561 has 8 divisors (see below), whose sum is σ = 69044480. Its totient is φ = 66713328.

The previous prime is 67876553. The next prime is 67876573. The reversal of 67876561 is 16567876.

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 67876561 - 2³ = 67876553 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67876261) 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 7 ways as a sum of consecutive naturals, for example, 39835 + ... + 41503.

It is an arithmetic number, because the mean of its divisors is an integer number (8630560).

Almost surely, 2^67876561 is an apocalyptic number.

It is an amenable number.

67876561 is a deficient number, since it is larger than the sum of its proper divisors (1167919).

67876561 is a wasteful number, since it uses less digits than its factorization.

67876561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343.

The product of its digits is 423360, while the sum is 46.

The square root of 67876561 is about 8238.7232627392. The cubic root of 67876561 is about 407.9183824470.

The spelling of 67876561 in words is "sixty-seven million, eight hundred seventy-six thousand, five hundred sixty-one".