11678749 has 4 divisors (see below), whose sum is σ = 12293440. Its totient is φ = 11064060.

The previous prime is 11678743. The next prime is 11678753. The reversal of 11678749 is 94787611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11678749 - 2⁷ = 11678621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11678743) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 307317 + ... + 307354.

It is an arithmetic number, because the mean of its divisors is an integer number (3073360).

Almost surely, 2^11678749 is an apocalyptic number.

11678749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11678749 is a deficient number, since it is larger than the sum of its proper divisors (614691).

11678749 is an equidigital number, since it uses as much as digits as its factorization.

11678749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614690.

The product of its digits is 84672, while the sum is 43.

The square root of 11678749 is about 3417.4184701321. The cubic root of 11678749 is about 226.8813380993.

The spelling of 11678749 in words is "eleven million, six hundred seventy-eight thousand, seven hundred forty-nine".