678327229 has 4 divisors (see below), whose sum is σ = 688451584. Its totient is φ = 668202876.

The previous prime is 678327191. The next prime is 678327241. The reversal of 678327229 is 922723876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 678327229 - 2²¹ = 676230077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678327289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5062077 + ... + 5062210.

It is an arithmetic number, because the mean of its divisors is an integer number (172112896).

Almost surely, 2^678327229 is an apocalyptic number.

It is an amenable number.

678327229 is a deficient number, since it is larger than the sum of its proper divisors (10124355).

678327229 is a wasteful number, since it uses less digits than its factorization.

678327229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10124354.

The product of its digits is 508032, while the sum is 46.

The square root of 678327229 is about 26044.7159516091. The cubic root of 678327229 is about 878.6442747917.

The spelling of 678327229 in words is "six hundred seventy-eight million, three hundred twenty-seven thousand, two hundred twenty-nine".