678547471 has 4 divisors (see below), whose sum is σ = 775482832. Its totient is φ = 581612112.

The previous prime is 678547459. The next prime is 678547501. The reversal of 678547471 is 174745876.

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 678547471 - 2²¹ = 676450319 is a prime.

It is a super-3 number, since 3×678547471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678547451) 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, 48467670 + ... + 48467683.

It is an arithmetic number, because the mean of its divisors is an integer number (193870708).

Almost surely, 2^678547471 is an apocalyptic number.

678547471 is a deficient number, since it is larger than the sum of its proper divisors (96935361).

678547471 is an equidigital number, since it uses as much as digits as its factorization.

678547471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96935360.

The product of its digits is 1317120, while the sum is 49.

The square root of 678547471 is about 26048.9437597765. The cubic root of 678547471 is about 878.7393584151.

The spelling of 678547471 in words is "six hundred seventy-eight million, five hundred forty-seven thousand, four hundred seventy-one".