20629627 has 4 divisors (see below), whose sum is σ = 20643336. Its totient is φ = 20615920.

The previous prime is 20629621. The next prime is 20629639. The reversal of 20629627 is 72692602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20629627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20629592 and 20629601.

It is not an unprimeable number, because it can be changed into a prime (20629621) 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, 4273 + ... + 7714.

It is an arithmetic number, because the mean of its divisors is an integer number (5160834).

Almost surely, 2^20629627 is an apocalyptic number.

20629627 is a deficient number, since it is larger than the sum of its proper divisors (13709).

20629627 is a wasteful number, since it uses less digits than its factorization.

20629627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13708.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 20629627 is about 4541.9849185131. The cubic root of 20629627 is about 274.2608337246.

The spelling of 20629627 in words is "twenty million, six hundred twenty-nine thousand, six hundred twenty-seven".