2149671 has 8 divisors (see below), whose sum is σ = 2936304. Its totient is φ = 1398080.

The previous prime is 2149661. The next prime is 2149681. The reversal of 2149671 is 1769412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2149661) and next prime (2149681).

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 2149671 - 2⁶ = 2149607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149621) 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, 8616 + ... + 8861.

It is an arithmetic number, because the mean of its divisors is an integer number (367038).

2^2149671 is an apocalyptic number.

2149671 is a deficient number, since it is larger than the sum of its proper divisors (786633).

2149671 is a wasteful number, since it uses less digits than its factorization.

2149671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17521.

The product of its digits is 3024, while the sum is 30.

The square root of 2149671 is about 1466.1756375005. The cubic root of 2149671 is about 129.0597043504.

Adding to 2149671 its sum of digits (30), we get a triangular number (2149701 = T₂₀₇₃).

The spelling of 2149671 in words is "two million, one hundred forty-nine thousand, six hundred seventy-one".