13072797 has 6 divisors (see below), whose sum is σ = 18882942. Its totient is φ = 8715192.

The previous prime is 13072789. The next prime is 13072799. The reversal of 13072797 is 79727031.

It can be written as a sum of positive squares in only one way, i.e., 7901721 + 5171076 = 2811^2 + 2274^2 .

It is not a de Polignac number, because 13072797 - 2³ = 13072789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13072799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 726258 + ... + 726275.

It is an arithmetic number, because the mean of its divisors is an integer number (3147157).

Almost surely, 2^13072797 is an apocalyptic number.

It is an amenable number.

13072797 is a deficient number, since it is larger than the sum of its proper divisors (5810145).

13072797 is a wasteful number, since it uses less digits than its factorization.

13072797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452539 (or 1452536 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 13072797 is about 3615.6323098457. The cubic root of 13072797 is about 235.5715497904.

It can be divided in two parts, 130 and 72797, that added together give a palindrome (72927).

The spelling of 13072797 in words is "thirteen million, seventy-two thousand, seven hundred ninety-seven".