12992661 has 24 divisors (see below), whose sum is σ = 21032544. Its totient is φ = 7659360.

The previous prime is 12992659. The next prime is 12992663. The reversal of 12992661 is 16629921.

It is an interprime number because it is at equal distance from previous prime (12992659) and next prime (12992663).

It is not a de Polignac number, because 12992661 - 2¹ = 12992659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12992663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1890 + ... + 5436.

It is an arithmetic number, because the mean of its divisors is an integer number (876356).

Almost surely, 2^12992661 is an apocalyptic number.

12992661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12992661 is a deficient number, since it is larger than the sum of its proper divisors (8039883).

12992661 is a wasteful number, since it uses less digits than its factorization.

12992661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601 (or 3598 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 12992661 is about 3604.5333956006. The cubic root of 12992661 is about 235.0892131475.

The spelling of 12992661 in words is "twelve million, nine hundred ninety-two thousand, six hundred sixty-one".