11970639 has 16 divisors (see below), whose sum is σ = 17879040. Its totient is φ = 7915320.

The previous prime is 11970587. The next prime is 11970643. The reversal of 11970639 is 93607911.

11970639 is a `hidden beast` number, since 1 + 19 + 7 + 0 + 639 = 666.

It is not a de Polignac number, because 11970639 - 2¹¹ = 11968591 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11970659) by changing a digit.

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, 1684 + ... + 5174.

It is an arithmetic number, because the mean of its divisors is an integer number (1117440).

Almost surely, 2^11970639 is an apocalyptic number.

11970639 is a deficient number, since it is larger than the sum of its proper divisors (5908401).

11970639 is a wasteful number, since it uses less digits than its factorization.

11970639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 11970639 is about 3459.8611243806. The cubic root of 11970639 is about 228.7559740445.

The spelling of 11970639 in words is "eleven million, nine hundred seventy thousand, six hundred thirty-nine".