13774887 has 16 divisors (see below), whose sum is σ = 23322880. Its totient is φ = 7871256.

The previous prime is 13774883. The next prime is 13774897. The reversal of 13774887 is 78847731.

It is a happy number.

It is not a de Polignac number, because 13774887 - 2² = 13774883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13774883) 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, 36253 + ... + 36630.

It is an arithmetic number, because the mean of its divisors is an integer number (1457680).

Almost surely, 2^13774887 is an apocalyptic number.

13774887 is a deficient number, since it is larger than the sum of its proper divisors (9547993).

13774887 is an equidigital number, since it uses as much as digits as its factorization.

13774887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72899 (or 72893 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 13774887 is about 3711.4534888639. The cubic root of 13774887 is about 239.7154439995.

The spelling of 13774887 in words is "thirteen million, seven hundred seventy-four thousand, eight hundred eighty-seven".