78648334 has 16 divisors (see below), whose sum is σ = 124592400. Its totient is φ = 37131264.

The previous prime is 78648331. The next prime is 78648359. The reversal of 78648334 is 43384687.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78648331) 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, 8782 + ... + 15310.

It is an arithmetic number, because the mean of its divisors is an integer number (7787025).

Almost surely, 2^78648334 is an apocalyptic number.

78648334 is a deficient number, since it is larger than the sum of its proper divisors (45944066).

78648334 is a wasteful number, since it uses less digits than its factorization.

78648334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6867.

The product of its digits is 387072, while the sum is 43.

The square root of 78648334 is about 8868.3895945093. The cubic root of 78648334 is about 428.4464109529.

The spelling of 78648334 in words is "seventy-eight million, six hundred forty-eight thousand, three hundred thirty-four".