678631275 has 144 divisors (see below), whose sum is σ = 1446931200. Its totient is φ = 297665280.

The previous prime is 678631273. The next prime is 678631301. The reversal of 678631275 is 572136876.

678631275 is a `hidden beast` number, since 6 + 7 + 8 + 631 + 2 + 7 + 5 = 666.

It is not a de Polignac number, because 678631275 - 2¹ = 678631273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 678631275.

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 in 143 ways as a sum of consecutive naturals, for example, 6225921 + ... + 6226029.

Almost surely, 2^678631275 is an apocalyptic number.

678631275 is an abundant number, since it is smaller than the sum of its proper divisors (768299925).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678631275 is a wasteful number, since it uses less digits than its factorization.

678631275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 250 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 678631275 is about 26050.5522974082. The cubic root of 678631275 is about 878.7755331584.

The spelling of 678631275 in words is "six hundred seventy-eight million, six hundred thirty-one thousand, two hundred seventy-five".