67872985 has 8 divisors (see below), whose sum is σ = 83649096. Its totient is φ = 52830720.

The previous prime is 67872979. The next prime is 67873007. The reversal of 67872985 is 58927876.

It can be written as a sum of positive squares in 4 ways, for example, as 13053769 + 54819216 = 3613^2 + 7404^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-67872985 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183256 + ... + 183625.

It is an arithmetic number, because the mean of its divisors is an integer number (10456137).

Almost surely, 2^67872985 is an apocalyptic number.

It is an amenable number.

67872985 is a deficient number, since it is larger than the sum of its proper divisors (15776111).

67872985 is a wasteful number, since it uses less digits than its factorization.

67872985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366923.

The product of its digits is 1693440, while the sum is 52.

The square root of 67872985 is about 8238.5062359629. The cubic root of 67872985 is about 407.9112187480.

The spelling of 67872985 in words is "sixty-seven million, eight hundred seventy-two thousand, nine hundred eighty-five".