20675716 has 6 divisors (see below), whose sum is σ = 36182510. Its totient is φ = 10337856.

The previous prime is 20675713. The next prime is 20675719. The reversal of 20675716 is 61757602.

It is an interprime number because it is at equal distance from previous prime (20675713) and next prime (20675719).

It can be written as a sum of positive squares in only one way, i.e., 18455616 + 2220100 = 4296^2 + 1490^2 .

It is a super-2 number, since 2×20675716² = 854970464225312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20675713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2584461 + ... + 2584468.

Almost surely, 2^20675716 is an apocalyptic number.

It is an amenable number.

20675716 is a deficient number, since it is larger than the sum of its proper divisors (15506794).

20675716 is a wasteful number, since it uses less digits than its factorization.

20675716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168933 (or 5168931 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 20675716 is about 4547.0557507029. The cubic root of 20675716 is about 274.4649254070.

The spelling of 20675716 in words is "twenty million, six hundred seventy-five thousand, seven hundred sixteen".