2971680639 has 8 divisors (see below), whose sum is σ = 3962724480. Its totient is φ = 1980878616.

The previous prime is 2971680619. The next prime is 2971680643. The reversal of 2971680639 is 9360861792.

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

It is not a de Polignac number, because 2971680639 - 2²⁴ = 2954903423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2971680591 and 2971680600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971680619) 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, 29517 + ... + 82550.

It is an arithmetic number, because the mean of its divisors is an integer number (495340560).

Almost surely, 2^2971680639 is an apocalyptic number.

2971680639 is a deficient number, since it is larger than the sum of its proper divisors (991043841).

2971680639 is a wasteful number, since it uses less digits than its factorization.

2971680639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120909.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 2971680639 is about 54513.1235483714. The cubic root of 2971680639 is about 1437.6970388910.

The spelling of 2971680639 in words is "two billion, nine hundred seventy-one million, six hundred eighty thousand, six hundred thirty-nine".