678631274 has 4 divisors (see below), whose sum is σ = 1017946914. Its totient is φ = 339315636.

The previous prime is 678631273. The next prime is 678631301. The reversal of 678631274 is 472136876.

678631274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 653058025 + 25573249 = 25555^2 + 5057^2 .

It is not an unprimeable number, because it can be changed into a prime (678631273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169657817 + ... + 169657820.

Almost surely, 2^678631274 is an apocalyptic number.

678631274 is a deficient number, since it is larger than the sum of its proper divisors (339315640).

678631274 is a wasteful number, since it uses less digits than its factorization.

678631274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339315639.

The product of its digits is 338688, while the sum is 44.

The square root of 678631274 is about 26050.5522782148. The cubic root of 678631274 is about 878.7755327268.

The spelling of 678631274 in words is "six hundred seventy-eight million, six hundred thirty-one thousand, two hundred seventy-four".