13764986 has 4 divisors (see below), whose sum is σ = 20647482. Its totient is φ = 6882492.

The previous prime is 13764977. The next prime is 13764997. The reversal of 13764986 is 68946731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68946731 = 7 ⋅9849533.

It can be written as a sum of positive squares in only one way, i.e., 13579225 + 185761 = 3685^2 + 431^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3441245 + ... + 3441248.

Almost surely, 2^13764986 is an apocalyptic number.

13764986 is a deficient number, since it is larger than the sum of its proper divisors (6882496).

13764986 is an equidigital number, since it uses as much as digits as its factorization.

13764986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882495.

The product of its digits is 217728, while the sum is 44.

The square root of 13764986 is about 3710.1194050866. The cubic root of 13764986 is about 239.6579966683.

The spelling of 13764986 in words is "thirteen million, seven hundred sixty-four thousand, nine hundred eighty-six".