11640851 has 4 divisors (see below), whose sum is σ = 11749752. Its totient is φ = 11531952.

The previous prime is 11640847. The next prime is 11640857. The reversal of 11640851 is 15804611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11640851 - 2² = 11640847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11640851.

It is not an unprimeable number, because it can be changed into a prime (11640857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54290 + ... + 54503.

It is an arithmetic number, because the mean of its divisors is an integer number (2937438).

Almost surely, 2^11640851 is an apocalyptic number.

11640851 is a deficient number, since it is larger than the sum of its proper divisors (108901).

11640851 is a wasteful number, since it uses less digits than its factorization.

11640851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108900.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 11640851 is about 3411.8691358257. The cubic root of 11640851 is about 226.6356592052.

The spelling of 11640851 in words is "eleven million, six hundred forty thousand, eight hundred fifty-one".