11621005 has 8 divisors (see below), whose sum is σ = 15213024. Its totient is φ = 8451600.

The previous prime is 11620991. The next prime is 11621009. The reversal of 11621005 is 50012611.

It is a happy number.

11621005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11621005 - 2⁹ = 11620493 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 11621005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621009) 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 7 ways as a sum of consecutive naturals, for example, 105591 + ... + 105700.

It is an arithmetic number, because the mean of its divisors is an integer number (1901628).

Almost surely, 2^11621005 is an apocalyptic number.

It is an amenable number.

11621005 is a deficient number, since it is larger than the sum of its proper divisors (3592019).

11621005 is a wasteful number, since it uses less digits than its factorization.

11621005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211307.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 11621005 is about 3408.9595186802. The cubic root of 11621005 is about 226.5067920585.

Adding to 11621005 its reverse (50012611), we get a palindrome (61633616).

The spelling of 11621005 in words is "eleven million, six hundred twenty-one thousand, five".