78474667 has 8 divisors (see below), whose sum is σ = 82326240. Its totient is φ = 74699520.

The previous prime is 78474653. The next prime is 78474679. The reversal of 78474667 is 76647487.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78474667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78474667.

It is not an unprimeable number, because it can be changed into a prime (78474607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16998 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (10290780).

Almost surely, 2^78474667 is an apocalyptic number.

78474667 is a deficient number, since it is larger than the sum of its proper divisors (3851573).

78474667 is a wasteful number, since it uses less digits than its factorization.

78474667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38213.

The product of its digits is 1580544, while the sum is 49.

The square root of 78474667 is about 8858.5928340792. The cubic root of 78474667 is about 428.1308211473.

The spelling of 78474667 in words is "seventy-eight million, four hundred seventy-four thousand, six hundred sixty-seven".