2787661473 has 8 divisors (see below), whose sum is σ = 3717512736. Its totient is φ = 1858125600.

The previous prime is 2787661447. The next prime is 2787661483. The reversal of 2787661473 is 3741667872.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2787661473 - 2¹⁴ = 2787645089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2787661403) 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 7 ways as a sum of consecutive naturals, for example, 57388 + ... + 94173.

It is an arithmetic number, because the mean of its divisors is an integer number (464689092).

Almost surely, 2^2787661473 is an apocalyptic number.

It is an amenable number.

2787661473 is a deficient number, since it is larger than the sum of its proper divisors (929851263).

2787661473 is a wasteful number, since it uses less digits than its factorization.

2787661473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157695.

The product of its digits is 2370816, while the sum is 51.

The square root of 2787661473 is about 52798.3093763427. The cubic root of 2787661473 is about 1407.3863815902.

The spelling of 2787661473 in words is "two billion, seven hundred eighty-seven million, six hundred sixty-one thousand, four hundred seventy-three".