13770797 has 4 divisors (see below), whose sum is σ = 13814556. Its totient is φ = 13727040.

The previous prime is 13770773. The next prime is 13770803. The reversal of 13770797 is 79707731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2353156 + 11417641 = 1534^2 + 3379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13770797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13773797) 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, 21404 + ... + 22037.

It is an arithmetic number, because the mean of its divisors is an integer number (3453639).

Almost surely, 2^13770797 is an apocalyptic number.

It is an amenable number.

13770797 is a deficient number, since it is larger than the sum of its proper divisors (43759).

13770797 is an equidigital number, since it uses as much as digits as its factorization.

13770797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43758.

The product of its (nonzero) digits is 64827, while the sum is 41.

The square root of 13770797 is about 3710.9024508871. The cubic root of 13770797 is about 239.6917164433.

The spelling of 13770797 in words is "thirteen million, seven hundred seventy thousand, seven hundred ninety-seven".