2067939647 has 4 divisors (see below), whose sum is σ = 2068143120. Its totient is φ = 2067736176.

The previous prime is 2067939641. The next prime is 2067939667. The reversal of 2067939647 is 7469397602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2067939647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2067939641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85643 + ... + 107100.

It is an arithmetic number, because the mean of its divisors is an integer number (517035780).

Almost surely, 2^2067939647 is an apocalyptic number.

2067939647 is a deficient number, since it is larger than the sum of its proper divisors (203473).

2067939647 is a wasteful number, since it uses less digits than its factorization.

2067939647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203472.

The product of its (nonzero) digits is 3429216, while the sum is 53.

The square root of 2067939647 is about 45474.6044182904. The cubic root of 2067939647 is about 1274.0289203552.

The spelling of 2067939647 in words is "two billion, sixty-seven million, nine hundred thirty-nine thousand, six hundred forty-seven".