1681266696 has 32 divisors (see below), whose sum is σ = 4385914560. Its totient is φ = 536055872.

The previous prime is 1681266683. The next prime is 1681266701. The reversal of 1681266696 is 6966621861.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1522335 + ... + 1523438.

It is an arithmetic number, because the mean of its divisors is an integer number (137059830).

Almost surely, 2^1681266696 is an apocalyptic number.

It is an amenable number.

1681266696 is an abundant number, since it is smaller than the sum of its proper divisors (2704647864).

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

1681266696 is a wasteful number, since it uses less digits than its factorization.

1681266696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045805 (or 3045801 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 1681266696 is about 41003.2522612536. The cubic root of 1681266696 is about 1189.0830909759.

The spelling of 1681266696 in words is "one billion, six hundred eighty-one million, two hundred sixty-six thousand, six hundred ninety-six".