20607679 has 4 divisors (see below), whose sum is σ = 20898000. Its totient is φ = 20317360.

The previous prime is 20607673. The next prime is 20607709. The reversal of 20607679 is 97670602.

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

It is not a de Polignac number, because 20607679 - 2⁷ = 20607551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20607673) 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, 145054 + ... + 145195.

It is an arithmetic number, because the mean of its divisors is an integer number (5224500).

Almost surely, 2^20607679 is an apocalyptic number.

20607679 is a deficient number, since it is larger than the sum of its proper divisors (290321).

20607679 is an equidigital number, since it uses as much as digits as its factorization.

20607679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290320.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 20607679 is about 4539.5681512673. The cubic root of 20607679 is about 274.1635365580.

The spelling of 20607679 in words is "twenty million, six hundred seven thousand, six hundred seventy-nine".