78840597 has 8 divisors (see below), whose sum is σ = 114677280. Its totient is φ = 47782160.

The previous prime is 78840583. The next prime is 78840613. The reversal of 78840597 is 79504887.

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

It is a cyclic number.

It is not a de Polignac number, because 78840597 - 2¹⁰ = 78839573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78840397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194522 + ... + 1194587.

It is an arithmetic number, because the mean of its divisors is an integer number (14334660).

Almost surely, 2^78840597 is an apocalyptic number.

It is an amenable number.

78840597 is a deficient number, since it is larger than the sum of its proper divisors (35836683).

78840597 is a wasteful number, since it uses less digits than its factorization.

78840597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389123.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 78840597 is about 8879.2227700402. Note that the first 3 decimals coincide. The cubic root of 78840597 is about 428.7952522453.

The spelling of 78840597 in words is "seventy-eight million, eight hundred forty thousand, five hundred ninety-seven".