11971602 has 12 divisors (see below), whose sum is σ = 25938510. Its totient is φ = 3990528.

The previous prime is 11971567. The next prime is 11971607. The reversal of 11971602 is 20617911.

It can be written as a sum of positive squares in only one way, i.e., 10949481 + 1022121 = 3309^2 + 1011^2 .

It is not an unprimeable number, because it can be changed into a prime (11971607) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 332527 + ... + 332562.

Almost surely, 2^11971602 is an apocalyptic number.

11971602 is an abundant number, since it is smaller than the sum of its proper divisors (13966908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11971602 is a wasteful number, since it uses less digits than its factorization.

11971602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665097 (or 665094 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 11971602 is about 3460.0002890173. Note that the first 3 decimals coincide. The cubic root of 11971602 is about 228.7621081112.

The spelling of 11971602 in words is "eleven million, nine hundred seventy-one thousand, six hundred two".