78648454 has 8 divisors (see below), whose sum is σ = 123102000. Its totient is φ = 37614456.

The previous prime is 78648439. The next prime is 78648461. The reversal of 78648454 is 45484687.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 1709749 = 78648454 / (7 + 8 + 6 + 4 + 8 + 4 + 5 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854829 + ... + 854920.

It is an arithmetic number, because the mean of its divisors is an integer number (15387750).

Almost surely, 2^78648454 is an apocalyptic number.

78648454 is a deficient number, since it is larger than the sum of its proper divisors (44453546).

78648454 is a wasteful number, since it uses less digits than its factorization.

78648454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709774.

The product of its digits is 860160, while the sum is 46.

The square root of 78648454 is about 8868.3963601093. The cubic root of 78648454 is about 428.4466288577.

The spelling of 78648454 in words is "seventy-eight million, six hundred forty-eight thousand, four hundred fifty-four".