11977775 has 12 divisors (see below), whose sum is σ = 15726672. Its totient is φ = 9018240.

The previous prime is 11977759. The next prime is 11977787. The reversal of 11977775 is 57777911.

It is not a de Polignac number, because 11977775 - 2⁴ = 11977759 is a prime.

It is a super-3 number, since 3×11977775³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13667 + ... + 14516.

It is an arithmetic number, because the mean of its divisors is an integer number (1310556).

Almost surely, 2^11977775 is an apocalyptic number.

11977775 is a deficient number, since it is larger than the sum of its proper divisors (3748897).

11977775 is a wasteful number, since it uses less digits than its factorization.

11977775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28210 (or 28205 counting only the distinct ones).

The product of its digits is 108045, while the sum is 44.

The square root of 11977775 is about 3460.8922260018. The cubic root of 11977775 is about 228.8014207514.

The spelling of 11977775 in words is "eleven million, nine hundred seventy-seven thousand, seven hundred seventy-five".