78734107 has 4 divisors (see below), whose sum is σ = 78816496. Its totient is φ = 78651720.

The previous prime is 78734099. The next prime is 78734111. The reversal of 78734107 is 70143787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78734107 - 2³ = 78734099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78734137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39744 + ... + 41677.

It is an arithmetic number, because the mean of its divisors is an integer number (19704124).

Almost surely, 2^78734107 is an apocalyptic number.

78734107 is a deficient number, since it is larger than the sum of its proper divisors (82389).

78734107 is an equidigital number, since it uses as much as digits as its factorization.

78734107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82388.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 78734107 is about 8873.2241603602. The cubic root of 78734107 is about 428.6021073329.

The spelling of 78734107 in words is "seventy-eight million, seven hundred thirty-four thousand, one hundred seven".