68478467 has 4 divisors (see below), whose sum is σ = 68772600. Its totient is φ = 68184336.

The previous prime is 68478457. The next prime is 68478479. The reversal of 68478467 is 76487486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76487486 = 2 ⋅38243743.

It is a cyclic number.

It is not a de Polignac number, because 68478467 - 2¹⁴ = 68462083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68478457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146717 + ... + 147182.

It is an arithmetic number, because the mean of its divisors is an integer number (17193150).

Almost surely, 2^68478467 is an apocalyptic number.

68478467 is a deficient number, since it is larger than the sum of its proper divisors (294133).

68478467 is a wasteful number, since it uses less digits than its factorization.

68478467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294132.

The product of its digits is 1806336, while the sum is 50.

The square root of 68478467 is about 8275.1717202726. The cubic root of 68478467 is about 409.1205957910.

The spelling of 68478467 in words is "sixty-eight million, four hundred seventy-eight thousand, four hundred sixty-seven".