11621705 has 8 divisors (see below), whose sum is σ = 13981704. Its totient is φ = 9273600.

The previous prime is 11621699. The next prime is 11621717. The reversal of 11621705 is 50712611.

It can be written as a sum of positive squares in 4 ways, for example, as 258064 + 11363641 = 508^2 + 3371^2 .

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

It is not a de Polignac number, because 11621705 - 2¹² = 11617609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 656 + ... + 4865.

It is an arithmetic number, because the mean of its divisors is an integer number (1747713).

Almost surely, 2^11621705 is an apocalyptic number.

It is an amenable number.

11621705 is a deficient number, since it is larger than the sum of its proper divisors (2359999).

11621705 is an equidigital number, since it uses as much as digits as its factorization.

11621705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 11621705 is about 3409.0621877578. The cubic root of 11621705 is about 226.5113399030.

The spelling of 11621705 in words is "eleven million, six hundred twenty-one thousand, seven hundred five".