11785997 has 4 divisors (see below), whose sum is σ = 11804700. Its totient is φ = 11767296.

The previous prime is 11785979. The next prime is 11786009. The reversal of 11785997 is 79958711.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6651241 + 5134756 = 2579^2 + 2266^2 .

It is a cyclic number.

It is not a de Polignac number, because 11785997 - 2⁶ = 11785933 is a prime.

It is a super-4 number, since 4×11785997⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11785937) 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, 8372 + ... + 9677.

It is an arithmetic number, because the mean of its divisors is an integer number (2951175).

Almost surely, 2^11785997 is an apocalyptic number.

It is an amenable number.

11785997 is a deficient number, since it is larger than the sum of its proper divisors (18703).

11785997 is an equidigital number, since it uses as much as digits as its factorization.

11785997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18702.

The product of its digits is 158760, while the sum is 47.

The square root of 11785997 is about 3433.0739869685. The cubic root of 11785997 is about 227.5737200207.

The spelling of 11785997 in words is "eleven million, seven hundred eighty-five thousand, nine hundred ninety-seven".