20875706 has 8 divisors (see below), whose sum is σ = 31389204. Its totient is φ = 10412640.

The previous prime is 20875703. The next prime is 20875709. The reversal of 20875706 is 60757802.

It is an interprime number because it is at equal distance from previous prime (20875703) and next prime (20875709).

It can be written as a sum of positive squares in 2 ways, for example, as 20839225 + 36481 = 4565^2 + 191^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20875703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11555 + ... + 13238.

Almost surely, 2^20875706 is an apocalyptic number.

20875706 is a deficient number, since it is larger than the sum of its proper divisors (10513498).

20875706 is a wasteful number, since it uses less digits than its factorization.

20875706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25216.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 20875706 is about 4568.9939811735. The cubic root of 20875706 is about 275.3470263612.

The spelling of 20875706 in words is "twenty million, eight hundred seventy-five thousand, seven hundred six".