11975806 has 4 divisors (see below), whose sum is σ = 17963712. Its totient is φ = 5987902.

The previous prime is 11975791. The next prime is 11975809. The reversal of 11975806 is 60857911.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11975809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2993950 + ... + 2993953.

It is an arithmetic number, because the mean of its divisors is an integer number (4490928).

Almost surely, 2^11975806 is an apocalyptic number.

11975806 is a deficient number, since it is larger than the sum of its proper divisors (5987906).

11975806 is an equidigital number, since it uses as much as digits as its factorization.

11975806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987905.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 11975806 is about 3460.6077500925. The cubic root of 11975806 is about 228.7888826774.

The spelling of 11975806 in words is "eleven million, nine hundred seventy-five thousand, eight hundred six".