2656971 has 6 divisors (see below), whose sum is σ = 3837860. Its totient is φ = 1771308.

The previous prime is 2656961. The next prime is 2656987. The reversal of 2656971 is 1796562.

2656971 is a `hidden beast` number, since 26 + 569 + 71 = 666.

It is not a de Polignac number, because 2656971 - 2¹⁵ = 2624203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147601 + ... + 147618.

2^2656971 is an apocalyptic number.

2656971 is a deficient number, since it is larger than the sum of its proper divisors (1180889).

2656971 is a wasteful number, since it uses less digits than its factorization.

2656971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295225 (or 295222 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 2656971 is about 1630.0217789956. The cubic root of 2656971 is about 138.5039857750.

The spelling of 2656971 in words is "two million, six hundred fifty-six thousand, nine hundred seventy-one".