20010986 has 8 divisors (see below), whose sum is σ = 31051620. Its totient is φ = 9660448.

The previous prime is 20010967. The next prime is 20011001. The reversal of 20010986 is 68901002.

It can be written as a sum of positive squares in 2 ways, for example, as 18653761 + 1357225 = 4319^2 + 1165^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172451 + ... + 172566.

Almost surely, 2^20010986 is an apocalyptic number.

20010986 is a deficient number, since it is larger than the sum of its proper divisors (11040634).

20010986 is a wasteful number, since it uses less digits than its factorization.

20010986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345048.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 20010986 is about 4473.3640585135. The cubic root of 20010986 is about 271.4914535486.

Adding to 20010986 its reverse (68901002), we get a palindrome (88911988).

The spelling of 20010986 in words is "twenty million, ten thousand, nine hundred eighty-six".