20675707 has 8 divisors (see below), whose sum is σ = 22302000. Its totient is φ = 19054560.

The previous prime is 20675701. The next prime is 20675713. The reversal of 20675707 is 70757602.

It is an interprime number because it is at equal distance from previous prime (20675701) and next prime (20675713).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20675707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20675701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13044 + ... + 14542.

It is an arithmetic number, because the mean of its divisors is an integer number (2787750).

Almost surely, 2^20675707 is an apocalyptic number.

20675707 is a deficient number, since it is larger than the sum of its proper divisors (1626293).

20675707 is a wasteful number, since it uses less digits than its factorization.

20675707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 20675707 is about 4547.0547610514. The cubic root of 20675707 is about 274.4648855828.

The spelling of 20675707 in words is "twenty million, six hundred seventy-five thousand, seven hundred seven".