13320977 has 2 divisors, whose sum is σ = 13320978. Its totient is φ = 13320976.

The previous prime is 13320971. The next prime is 13321003. The reversal of 13320977 is 77902331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13315201 + 5776 = 3649^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 13320977 - 2¹⁴ = 13304593 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (13320971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660488 + 6660489.

It is an arithmetic number, because the mean of its divisors is an integer number (6660489).

Almost surely, 2^13320977 is an apocalyptic number.

It is an amenable number.

13320977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320977 is an equidigital number, since it uses as much as digits as its factorization.

13320977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 13320977 is about 3649.7913639001. The cubic root of 13320977 is about 237.0529473946.

The spelling of 13320977 in words is "thirteen million, three hundred twenty thousand, nine hundred seventy-seven".