1346666680 has 16 divisors (see below), whose sum is σ = 3030000120. Its totient is φ = 538666656.

The previous prime is 1346666677. The next prime is 1346666687. The reversal of 1346666680 is 866666431.

It is a super-2 number, since 2×1346666680² = 3627022294044444800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1346666680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1346666687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16833294 + ... + 16833373.

Almost surely, 2^1346666680 is an apocalyptic number.

1346666680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1346666680 is an abundant number, since it is smaller than the sum of its proper divisors (1683333440).

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

1346666680 is a wasteful number, since it uses less digits than its factorization.

1346666680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33666678 (or 33666674 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 1346666680 is about 36696.9573670625. The cubic root of 1346666680 is about 1104.2990661282.

The spelling of 1346666680 in words is "one billion, three hundred forty-six million, six hundred sixty-six thousand, six hundred eighty".