11672905 has 8 divisors (see below), whose sum is σ = 14349384. Its totient is φ = 9110400.

The previous prime is 11672893. The next prime is 11672911. The reversal of 11672905 is 50927611.

11672905 = T₇₃₄ + T₇₃₅ + ... + T₇₇₄.

It can be written as a sum of positive squares in 4 ways, for example, as 24336 + 11648569 = 156^2 + 3413^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-11672905 is a prime.

It is a super-2 number, since 2×11672905² = 272513422278050, which contains 22 as substring.

It is a Duffinian 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, 28266 + ... + 28675.

It is an arithmetic number, because the mean of its divisors is an integer number (1793673).

Almost surely, 2^11672905 is an apocalyptic number.

It is an amenable number.

11672905 is a deficient number, since it is larger than the sum of its proper divisors (2676479).

11672905 is an equidigital number, since it uses as much as digits as its factorization.

11672905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56987.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 11672905 is about 3416.5633317707. The cubic root of 11672905 is about 226.8434882759.

The spelling of 11672905 in words is "eleven million, six hundred seventy-two thousand, nine hundred five".