20710671 has 8 divisors (see below), whose sum is σ = 27733680. Its totient is φ = 13747392.

The previous prime is 20710667. The next prime is 20710673. The reversal of 20710671 is 17601702.

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

It is not a de Polignac number, because 20710671 - 2² = 20710667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20710673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14116 + ... + 15513.

It is an arithmetic number, because the mean of its divisors is an integer number (3466710).

Almost surely, 2^20710671 is an apocalyptic number.

20710671 is a deficient number, since it is larger than the sum of its proper divisors (7023009).

20710671 is a wasteful number, since it uses less digits than its factorization.

20710671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29865.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 20710671 is about 4550.8978235069. The cubic root of 20710671 is about 274.6195112659.

It can be divided in two parts, 207 and 10671, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 20710671 in words is "twenty million, seven hundred ten thousand, six hundred seventy-one".