20670627 has 4 divisors (see below), whose sum is σ = 27560840. Its totient is φ = 13780416.

The previous prime is 20670577. The next prime is 20670631. The reversal of 20670627 is 72607602.

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

It is not a de Polignac number, because 20670627 - 2⁶ = 20670563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20670594 and 20670603.

It is not an unprimeable number, because it can be changed into a prime (20670667) 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 in 3 ways as a sum of consecutive naturals, for example, 3445102 + ... + 3445107.

It is an arithmetic number, because the mean of its divisors is an integer number (6890210).

Almost surely, 2^20670627 is an apocalyptic number.

20670627 is a deficient number, since it is larger than the sum of its proper divisors (6890213).

20670627 is an equidigital number, since it uses as much as digits as its factorization.

20670627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6890212.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 20670627 is about 4546.4961233900. The cubic root of 20670627 is about 274.4424051613.

The spelling of 20670627 in words is "twenty million, six hundred seventy thousand, six hundred twenty-seven".