2061147647 has 4 divisors (see below), whose sum is σ = 2219697480. Its totient is φ = 1902597816.

The previous prime is 2061147637. The next prime is 2061147689. The reversal of 2061147647 is 7467411602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2061147647 - 2⁸ = 2061147391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2061147647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061147617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79274897 + ... + 79274922.

It is an arithmetic number, because the mean of its divisors is an integer number (554924370).

Almost surely, 2^2061147647 is an apocalyptic number.

2061147647 is a deficient number, since it is larger than the sum of its proper divisors (158549833).

2061147647 is a wasteful number, since it uses less digits than its factorization.

2061147647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158549832.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 2061147647 is about 45399.8639535407. The cubic root of 2061147647 is about 1272.6325715184.

The spelling of 2061147647 in words is "two billion, sixty-one million, one hundred forty-seven thousand, six hundred forty-seven".