20080651 has 4 divisors (see below), whose sum is σ = 20409904. Its totient is φ = 19751400.

The previous prime is 20080589. The next prime is 20080661. The reversal of 20080651 is 15608002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20080651 - 2⁷ = 20080523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20080661) 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, 164535 + ... + 164656.

It is an arithmetic number, because the mean of its divisors is an integer number (5102476).

Almost surely, 2^20080651 is an apocalyptic number.

20080651 is a deficient number, since it is larger than the sum of its proper divisors (329253).

20080651 is an equidigital number, since it uses as much as digits as its factorization.

20080651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329252.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 20080651 is about 4481.1439387728. The cubic root of 20080651 is about 271.8061397985.

Adding to 20080651 its reverse (15608002), we get a palindrome (35688653).

The spelling of 20080651 in words is "twenty million, eighty thousand, six hundred fifty-one".