11630905 has 16 divisors (see below), whose sum is σ = 16398144. Its totient is φ = 7807680.

The previous prime is 11630897. The next prime is 11630923. The reversal of 11630905 is 50903611.

It is not a de Polignac number, because 11630905 - 2³ = 11630897 is a prime.

It is a super-2 number, since 2×11630905² = 270555902238050, which contains 22 as substring.

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 11630905.

It is an unprimeable number.

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, 7419 + ... + 8848.

It is an arithmetic number, because the mean of its divisors is an integer number (1024884).

Almost surely, 2^11630905 is an apocalyptic number.

It is an amenable number.

11630905 is a deficient number, since it is larger than the sum of its proper divisors (4767239).

11630905 is a wasteful number, since it uses less digits than its factorization.

11630905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16296.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 11630905 is about 3410.4112655221. The cubic root of 11630905 is about 226.5710946086.

The spelling of 11630905 in words is "eleven million, six hundred thirty thousand, nine hundred five".