13020997 has 16 divisors (see below), whose sum is σ = 15163200. Its totient is φ = 11050240.

The previous prime is 13020991. The next prime is 13021009. The reversal of 13020997 is 79902031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13020997 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 (13020991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33279 + ... + 33667.

It is an arithmetic number, because the mean of its divisors is an integer number (947700).

Almost surely, 2^13020997 is an apocalyptic number.

13020997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13020997 is a deficient number, since it is larger than the sum of its proper divisors (2142203).

13020997 is a wasteful number, since it uses less digits than its factorization.

13020997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 13020997 is about 3608.4618606825. The cubic root of 13020997 is about 235.2599929200.

The spelling of 13020997 in words is "thirteen million, twenty thousand, nine hundred ninety-seven".