13617977 has 2 divisors, whose sum is σ = 13617978. Its totient is φ = 13617976.

The previous prime is 13617953. The next prime is 13618009. The reversal of 13617977 is 77971631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9916201 + 3701776 = 3149^2 + 1924^2 .

It is an emirp because it is prime and its reverse (77971631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13617977 - 2⁶ = 13617913 is a prime.

It is not a weakly prime, because it can be changed into another prime (13617917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6808988 + 6808989.

It is an arithmetic number, because the mean of its divisors is an integer number (6808989).

Almost surely, 2^13617977 is an apocalyptic number.

It is an amenable number.

13617977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13617977 is an equidigital number, since it uses as much as digits as its factorization.

13617977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566, while the sum is 41.

The square root of 13617977 is about 3690.2543272788. The cubic root of 13617977 is about 238.8017648601.

The spelling of 13617977 in words is "thirteen million, six hundred seventeen thousand, nine hundred seventy-seven".