20680610 has 8 divisors (see below), whose sum is σ = 37225116. Its totient is φ = 8272240.

The previous prime is 20680603. The next prime is 20680613. The reversal of 20680610 is 1608602.

It can be written as a sum of positive squares in 2 ways, for example, as 19351201 + 1329409 = 4399^2 + 1153^2 .

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 (20680613) 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, 1034021 + ... + 1034040.

Almost surely, 2^20680610 is an apocalyptic number.

20680610 is a deficient number, since it is larger than the sum of its proper divisors (16544506).

20680610 is a wasteful number, since it uses less digits than its factorization.

20680610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068068.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 20680610 is about 4547.5938692896. The cubic root of 20680610 is about 274.4865792380.

The spelling of 20680610 in words is "twenty million, six hundred eighty thousand, six hundred ten".