12977801 has 4 divisors (see below), whose sum is σ = 12987600. Its totient is φ = 12968004.

The previous prime is 12977759. The next prime is 12977803. The reversal of 12977801 is 10877921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12977801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12977803) 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, 2531 + ... + 5688.

It is an arithmetic number, because the mean of its divisors is an integer number (3246900).

Almost surely, 2^12977801 is an apocalyptic number.

It is an amenable number.

12977801 is a deficient number, since it is larger than the sum of its proper divisors (9799).

12977801 is an equidigital number, since it uses as much as digits as its factorization.

12977801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9798.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 12977801 is about 3602.4715127257. The cubic root of 12977801 is about 234.9995533415. Note that the first 3 decimals are identical.

The spelling of 12977801 in words is "twelve million, nine hundred seventy-seven thousand, eight hundred one".