1678200664 has 16 divisors (see below), whose sum is σ = 3596144400. Its totient is φ = 719228832.

The previous prime is 1678200637. The next prime is 1678200673. The reversal of 1678200664 is 4660028761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14983879 + ... + 14983990.

It is an arithmetic number, because the mean of its divisors is an integer number (224759025).

Almost surely, 2^1678200664 is an apocalyptic number.

1678200664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1678200664 is an abundant number, since it is smaller than the sum of its proper divisors (1917943736).

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

1678200664 is a wasteful number, since it uses less digits than its factorization.

1678200664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29967882 (or 29967878 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1678200664 is about 40965.8475318161. The cubic root of 1678200664 is about 1188.3598297074.

The spelling of 1678200664 in words is "one billion, six hundred seventy-eight million, two hundred thousand, six hundred sixty-four".