67878315 has 12 divisors (see below), whose sum is σ = 117655824. Its totient is φ = 36201744.

The previous prime is 67878289. The next prime is 67878323. The reversal of 67878315 is 51387876.

It is not a de Polignac number, because 67878315 - 2¹⁴ = 67861931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1508407 = 67878315 / (6 + 7 + 8 + 7 + 8 + 3 + 1 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 754159 + ... + 754248.

It is an arithmetic number, because the mean of its divisors is an integer number (9804652).

Almost surely, 2^67878315 is an apocalyptic number.

67878315 is a deficient number, since it is larger than the sum of its proper divisors (49777509).

67878315 is a wasteful number, since it uses less digits than its factorization.

67878315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508418 (or 1508415 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 67878315 is about 8238.8297105839. The cubic root of 67878315 is about 407.9218960933.

The spelling of 67878315 in words is "sixty-seven million, eight hundred seventy-eight thousand, three hundred fifteen".