13678977 has 16 divisors (see below), whose sum is σ = 19716480. Its totient is φ = 8385792.

The previous prime is 13678969. The next prime is 13678979. The reversal of 13678977 is 77987631.

It is a happy number.

It is not a de Polignac number, because 13678977 - 2³ = 13678969 is a prime.

It is a super-2 number, since 2×13678977² = 374228823533058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13678979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13513 + ... + 14489.

It is an arithmetic number, because the mean of its divisors is an integer number (1232280).

Almost surely, 2^13678977 is an apocalyptic number.

It is an amenable number.

13678977 is a deficient number, since it is larger than the sum of its proper divisors (6037503).

13678977 is a wasteful number, since it uses less digits than its factorization.

13678977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352.

The product of its digits is 444528, while the sum is 48.

The square root of 13678977 is about 3698.5101054343. The cubic root of 13678977 is about 239.1577945263.

The spelling of 13678977 in words is "thirteen million, six hundred seventy-eight thousand, nine hundred seventy-seven".