78519467 has 4 divisors (see below), whose sum is σ = 84559440. Its totient is φ = 72479496.

The previous prime is 78519461. The next prime is 78519473. The reversal of 78519467 is 76491587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76491587 = 19 ⋅4025873.

It is an interprime number because it is at equal distance from previous prime (78519461) and next prime (78519473).

It is a cyclic number.

It is not a de Polignac number, because 78519467 - 2¹⁸ = 78257323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78519461) 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, 3019967 + ... + 3019992.

It is an arithmetic number, because the mean of its divisors is an integer number (21139860).

Almost surely, 2^78519467 is an apocalyptic number.

78519467 is a deficient number, since it is larger than the sum of its proper divisors (6039973).

78519467 is a wasteful number, since it uses less digits than its factorization.

78519467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6039972.

The product of its digits is 423360, while the sum is 47.

The square root of 78519467 is about 8861.1210916001. The cubic root of 78519467 is about 428.2122767846.

The spelling of 78519467 in words is "seventy-eight million, five hundred nineteen thousand, four hundred sixty-seven".