2780796971 has 8 divisors (see below), whose sum is σ = 2906010624. Its totient is φ = 2658335400.

The previous prime is 2780796961. The next prime is 2780796973. The reversal of 2780796971 is 1796970872.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2780796971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2780796973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685955 + ... + 689996.

It is an arithmetic number, because the mean of its divisors is an integer number (363251328).

Almost surely, 2^2780796971 is an apocalyptic number.

2780796971 is a deficient number, since it is larger than the sum of its proper divisors (125213653).

2780796971 is a wasteful number, since it uses less digits than its factorization.

2780796971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376041.

The product of its (nonzero) digits is 2667168, while the sum is 56.

The square root of 2780796971 is about 52733.2624725609. The cubic root of 2780796971 is about 1406.2302216649.

The spelling of 2780796971 in words is "two billion, seven hundred eighty million, seven hundred ninety-six thousand, nine hundred seventy-one".