1678270466 has 8 divisors (see below), whose sum is σ = 2578805964. Its totient is φ = 818668480.

The previous prime is 1678270423. The next prime is 1678270483. The reversal of 1678270466 is 6640728761.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1677312025 + 958441 = 40955^2 + 979^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1678270466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10233275 + ... + 10233438.

Almost surely, 2^1678270466 is an apocalyptic number.

1678270466 is a deficient number, since it is larger than the sum of its proper divisors (900535498).

1678270466 is a wasteful number, since it uses less digits than its factorization.

1678270466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20466756.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 1678270466 is about 40966.6994765261. The cubic root of 1678270466 is about 1188.3763054374.

The spelling of 1678270466 in words is "one billion, six hundred seventy-eight million, two hundred seventy thousand, four hundred sixty-six".