11621787 has 16 divisors (see below), whose sum is σ = 16623360. Its totient is φ = 7199712.

The previous prime is 11621783. The next prime is 11621791. The reversal of 11621787 is 78712611.

11621787 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11621783) and next prime (11621791).

It is not a de Polignac number, because 11621787 - 2² = 11621783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11621783) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1098 + ... + 4944.

It is an arithmetic number, because the mean of its divisors is an integer number (1038960).

Almost surely, 2^11621787 is an apocalyptic number.

11621787 is a deficient number, since it is larger than the sum of its proper divisors (5001573).

11621787 is a wasteful number, since it uses less digits than its factorization.

11621787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922.

The product of its digits is 4704, while the sum is 33.

The square root of 11621787 is about 3409.0742145046. The cubic root of 11621787 is about 226.5118726386.

The spelling of 11621787 in words is "eleven million, six hundred twenty-one thousand, seven hundred eighty-seven".