2861971 has 8 divisors (see below), whose sum is σ = 3340800. Its totient is φ = 2400648.

The previous prime is 2861941. The next prime is 2861977. The reversal of 2861971 is 1791682.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2861971 - 2¹³ = 2853779 is a prime.

It is a Duffinian number.

2861971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2861977) 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, 4021 + ... + 4678.

It is an arithmetic number, because the mean of its divisors is an integer number (417600).

2^2861971 is an apocalyptic number.

2861971 is a deficient number, since it is larger than the sum of its proper divisors (478829).

2861971 is an equidigital number, since it uses as much as digits as its factorization.

2861971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8753.

The product of its digits is 6048, while the sum is 34.

The square root of 2861971 is about 1691.7360905295. The cubic root of 2861971 is about 141.9782251872.

The spelling of 2861971 in words is "two million, eight hundred sixty-one thousand, nine hundred seventy-one".