678630331 has 12 divisors (see below), whose sum is σ = 713172600. Its totient is φ = 645553920.

The previous prime is 678630317. The next prime is 678630367. The reversal of 678630331 is 133036876.

It is not a de Polignac number, because 678630331 - 2⁵ = 678630299 is a prime.

It is a super-2 number, since 2×678630331² = 921078252306339122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678630311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50715 + ... + 62683.

It is an arithmetic number, because the mean of its divisors is an integer number (59431050).

Almost surely, 2^678630331 is an apocalyptic number.

678630331 is a deficient number, since it is larger than the sum of its proper divisors (34542269).

678630331 is a wasteful number, since it uses less digits than its factorization.

678630331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12090 (or 12059 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 678630331 is about 26050.5341787841. The cubic root of 678630331 is about 878.7751256890.

The spelling of 678630331 in words is "six hundred seventy-eight million, six hundred thirty thousand, three hundred thirty-one".