678166352 has 10 divisors (see below), whose sum is σ = 1313947338. Its totient is φ = 339083168.

The previous prime is 678166301. The next prime is 678166361. The reversal of 678166352 is 253661876.

It can be written as a sum of positive squares in only one way, i.e., 537126976 + 141039376 = 23176^2 + 11876^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21192683 + ... + 21192714.

Almost surely, 2^678166352 is an apocalyptic number.

It is an amenable number.

678166352 is a deficient number, since it is larger than the sum of its proper divisors (635780986).

678166352 is a wasteful number, since it uses less digits than its factorization.

678166352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42385405 (or 42385399 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 678166352 is about 26041.6272917036. The cubic root of 678166352 is about 878.5748074190.

The spelling of 678166352 in words is "six hundred seventy-eight million, one hundred sixty-six thousand, three hundred fifty-two".