11671955 has 4 divisors (see below), whose sum is σ = 14006352. Its totient is φ = 9337560.

The previous prime is 11671943. The next prime is 11671967. The reversal of 11671955 is 55917611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55917611 = 1951 ⋅28661.

It is an interprime number because it is at equal distance from previous prime (11671943) and next prime (11671967).

It is not a de Polignac number, because 11671955 - 2⁴ = 11671939 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 1167191 + ... + 1167200.

It is an arithmetic number, because the mean of its divisors is an integer number (3501588).

Almost surely, 2^11671955 is an apocalyptic number.

11671955 is a deficient number, since it is larger than the sum of its proper divisors (2334397).

11671955 is an equidigital number, since it uses as much as digits as its factorization.

11671955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334396.

The product of its digits is 9450, while the sum is 35.

The square root of 11671955 is about 3416.4243003468. The cubic root of 11671955 is about 226.8373342192.

The spelling of 11671955 in words is "eleven million, six hundred seventy-one thousand, nine hundred fifty-five".