11787690 has 16 divisors (see below), whose sum is σ = 28290528. Its totient is φ = 3143376.

The previous prime is 11787689. The next prime is 11787691. The reversal of 11787690 is 9678711.

It is an interprime number because it is at equal distance from previous prime (11787689) and next prime (11787691).

It is a super-2 number, since 2×11787690² = 277899271072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11787691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196432 + ... + 196491.

It is an arithmetic number, because the mean of its divisors is an integer number (1768158).

Almost surely, 2^11787690 is an apocalyptic number.

11787690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11787690 is an abundant number, since it is smaller than the sum of its proper divisors (16502838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11787690 is a wasteful number, since it uses less digits than its factorization.

11787690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392933.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 11787690 is about 3433.3205501380. The cubic root of 11787690 is about 227.5846161109.

The spelling of 11787690 in words is "eleven million, seven hundred eighty-seven thousand, six hundred ninety".