11870765 has 4 divisors (see below), whose sum is σ = 14244924. Its totient is φ = 9496608.

The previous prime is 11870759. The next prime is 11870767. The reversal of 11870765 is 56707811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56707811 = 23 ⋅2465557.

It can be written as a sum of positive squares in 2 ways, for example, as 2316484 + 9554281 = 1522^2 + 3091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11870765 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 (11870767) 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, 1187072 + ... + 1187081.

It is an arithmetic number, because the mean of its divisors is an integer number (3561231).

Almost surely, 2^11870765 is an apocalyptic number.

It is an amenable number.

11870765 is a deficient number, since it is larger than the sum of its proper divisors (2374159).

11870765 is an equidigital number, since it uses as much as digits as its factorization.

11870765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374158.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 11870765 is about 3445.3976548433. The cubic root of 11870765 is about 228.1180072918.

The spelling of 11870765 in words is "eleven million, eight hundred seventy thousand, seven hundred sixty-five".